[mob17]

Originally Posted by idnan

It is recommended since the subframe will be dropped and even the slightest movement will affect the alignment. There are metal pins that the subframe bushes fit onto but it can still change especially since the old rubber ones will have flex in them.

Appreciated idnan.

Still have your AKG subframe bushes sat waiting to be installed. I was thinking of doing the bushes and rear springs seperately, but if they both need alignments then might as well do them together.

[mob17]

Seriously considering water meth injection now...

[AWBimmer]

What are you waiting for? Mike Miller will forever be pleased Dannysan

[mob17]

Originally Posted by AWBimmer

What are you waiting for? Mike Miller will forever be pleased Dannysan

haha Mike Miller

I'm just worried about blowing the transmission! Need to do some research to see if torque can be electronically limited, or if any gearbox mods can be done...

[StuyMac]

Great read this thread!

I too am an EcoTune fan, Stan seems to get the power from the car, but also amazing MPG!

Earlier this year I fitted a Wagner IC (stone punctured the OEM IC), and had the Ecotune MAXTune generic on the car. I wanted more from the car so opted for a custom map. I went to a local tuner who extracted more ooomph, but the economy wouldnt go above 35mpg. I did also consider the Hybrids Turbos, but couldnt justify the cost until the OEM ones give up the ghost.

Even with the OEM turbos, Stan has still extracted 397bhp and 593ft/lb from mine (at this point the OEM turbos couldnt provide any more air to go futher), so if I do suffer turbo failure in the future, itll have a silver lining as Ill be going the hybrid turbo, and more power route with EcoTune

[mob17]

Originally Posted by StuyMac

Great read this thread!

I too am an EcoTune fan, Stan seems to get the power from the car, but also amazing MPG!

Earlier this year I fitted a Wagner IC (stone punctured the OEM IC), and had the Ecotune MAXTune generic on the car. I wanted more from the car so opted for a custom map. I went to a local tuner who extracted more ooomph, but the economy wouldnt go above 35mpg. I did also consider the Hybrids Turbos, but couldnt justify the cost until the OEM ones give up the ghost.

Even with the OEM turbos, Stan has still extracted 397bhp and 593ft/lb from mine (at this point the OEM turbos could provide any more air to go futher), so if I do suffer turbo failure in the future, itll have a silver lining as Ill be going the hybrid turbo, and more power route with EcoTune

Wow. Those are amazing figures without a dpf delete, don't think i've ever seen a tune making nearly 400bhp with just an IC, or even with a dpf delete! Can you post your dyno run?

[StuyMac]

Sorry, should have explained more clearly in my previous posts.... Modification wise, my car is very similar to yours, EcoTune DPF delete, Swirl Flap delete, Wagner IC... My car also has an EGR delete and Ive got an exhaust on the car too which has removed the silencers. I dont however have the Hybrid Turbos

Lower graph is the Ecotune Generic MAXTune, the 397/593 is Stans custom map



Stan did say it was the most he had seen from a X35d without Hybrids, but I couldnt justify the cost of the Hybrids considering the results he got from the car, well not at least whilst the OEM turbos are still good.

I did read earlier in the thread that people are also worried about the torque through the gearbox.... There are people running much more power (with meth) on the std box, Stan also said his X5 was running hybrids and that has been fine for a long time and that lugs more weight round! I also tow my Integra Race car with my E91, and when you put your foot down, my biggest worry is that the tow bar is going to break off! It leaves a lot of normal cars for dead, even when towing

[mob17]

Oh right that makes sense now! But still very impressive figures. I agree with you i don't think the hybrid turbos would be worth it, but then again you may get close to 440bhp if you do. Having said that i reckon meth would be a more worthwhile addition to your car, ever thought about it?

My exhaust is standard, i'm not sure whether to have straight pipes all the way from the dpf delete pipe and delete the boxes? I don't think it will affect power, perhaps the sound?

I'm reasonably comfortable at the moment with the gearbox, it still shifts as smooth as silk. I think it's just one of those things that people worry about. I have also seen people running more power, about 500bhp. So touchwood there's still room.

[StuyMac]

THB the exhaust is the only real "extra" thing I have in addition to cars at the same stage. Im using the original exhaust, but with the resonator box removed and straight pipes from there (no back boxes). The sound is a bit marmite, some love it, some hate it. IMO it makes a nice sound, especially on throttle, but there is a lot of external turbo whilst off throttle, though you cant hear that in the car.

Meth is something I dont think Id ever consider. Its something that needs adding all the time, and I just want to keep the car so its only diesel that goes in

This is a clip of the exhaust, this is pre Wagner IC and Custom map, but the sound hasnt changed at all

[AWSAWS]

Originally Posted by StuyMac

THB the exhaust is the only real "extra" thing I have in addition to cars at the same stage. Im using the original exhaust, but with the resonator box removed and straight pipes from there (no back boxes). The sound is a bit marmite, some love it, some hate it. IMO it makes a nice sound, especially on throttle, but there is a lot of external turbo whilst off throttle, though you cant hear that in the car.

Meth is something I dont think Id ever consider. Its something that needs adding all the time, and I just want to keep the car so its only diesel that goes in

This is a clip of the exhaust, this is pre Wagner IC and Custom map, but the sound hasnt changed at all

I think the turbo whistle is quite cool.

Remember now the meth injection can be set to flow only at a certain times like boost levels. I know you guys don't have a JB4 option but the coolingmist or similar electronics are similar. You can even turn it off, but I bet you wont want to.

I have an 2.3 US Gallon (8.7 litre) tank and lately I haven't filled it for weeks. Plus 50% of that can be just deionised water which is £3 for 5 litres from Halfords. True on WOT I can empty it in about 110 seconds but you aren't often WOT for very long. Especially on public roads. The way IATs drop though with a FMIC is incredible. Last night ambient temp was 13C(55.4F). My initial IAT was 15C (59F) and after full throttle in 3rd to redline temps had dropped to 12.7C 55F. Lower than ambient thanks to evapouration! You can imagine how hot an engine can get with high boost and high revs. Water meth is great for the longevity of your engine.



You guys should see this 2800HP, 5,000 ftlb truck

I've posted this video about it before. Very cool for meth injection and diesel fans.

[mob17]

Originally Posted by StuyMac

THB the exhaust is the only real "extra" thing I have in addition to cars at the same stage. Im using the original exhaust, but with the resonator box removed and straight pipes from there (no back boxes). The sound is a bit marmite, some love it, some hate it. IMO it makes a nice sound, especially on throttle, but there is a lot of external turbo whilst off throttle, though you cant hear that in the car.

Meth is something I dont think Id ever consider. Its something that needs adding all the time, and I just want to keep the car so its only diesel that goes in

This is a clip of the exhaust, this is pre Wagner IC and Custom map, but the sound hasnt changed at all

Thanks for the clip, it does sound similar to mine but in person will probably sound different. I may leave the exhaust as it is and do meth first

[mob17]

Originally Posted by AWSAWS

I think the turbo whistle is quite cool.

Remember now the meth injection can be set to flow only at a certain times like boost levels. I know you guys don't have a JB4 option but the coolingmist or similar electronics are similar. You can even turn it off, but I bet you wont want to.

I have an 2.3 US Gallon (8.7 litre) tank and lately I haven't filled it for weeks. Plus 50% of that can be just deionised water which is £3 for 5 litres from Halfords. True on WOT I can empty it in about 110 seconds but you aren't often WOT for very long. Especially on public roads. The way IATs drop though with a FMIC is incredible. Last night ambient temp was 13C(55.4F). My initial IAT was 15C (59F) and after full throttle in 3rd to redline temps had dropped to 12.7C 55F. Lower than ambient thanks to evapouration! You can imagine how hot an engine can get with high boost and high revs. Water meth is great for the longevity of your engine.



You guys should see this 2800HP, 5,000 ftlb truck

I've posted this video about it before. Very cool for meth injection and diesel fans.

Wow that truck meth set up looks amazing. Quite a lot of stages, pre supercharger, on ic and then one for each cylinder. Some great engineering.

They have done a 335i before and have added 113hp at the wheels with just meth. Crazy. Some good technical articles on their website here: http://bankspower.com/techarticles

[NC335d]

Originally Posted by mob17

Oh right that makes sense now! But still very impressive figures. I agree with you i don't think the hybrid turbos would be worth it, but then again you may get close to 440bhp if you do. Having said that i reckon meth would be a more worthwhile addition to your car, ever thought about it?

My exhaust is standard, i'm not sure whether to have straight pipes all the way from the dpf delete pipe and delete the boxes? I don't think it will affect power, perhaps the sound?

I'm reasonably comfortable at the moment with the gearbox, it still shifts as smooth as silk. I think it's just one of those things that people worry about. I have also seen people running more power, about 500bhp. So touchwood there's still room.

Hey, I am here in the US, running hybrid turbos, dpf+egr=scr delete, Wagner FMIC, Bohl Diesel downpipe, full custom downpipe back exhaust and water meth. I am running a custom tune from Bimmer Performance Center. The car is consistently putting down 440 rear wheel hp and 655 ft. lbs. torque to the rear wheels on the dyno. It is my understanding that you lads are measuring power at the flywheel, which would mean that my #'s are approx. 18% lower than what they would measure there in the UK.

I have had zero problems to date running my current setup in terms of the transmission and associated power levels. This is not to say that I won't have issues in the future. It is important that you maintain the transmission as you do the engine, i.e. change fluids/ filter and replace the mechatronic seals for the valve body.

[russjonesr]

Also dependent on which dyno is used...many UK dyno's run Dyno Dynamics (Mustang or Heartbreaker Dyno) as opposed to DynoJet...from what I understand that would immediately account for the 15% variance ?

[mob17]

Originally Posted by NC335d

Hey, I am here in the US, running hybrid turbos, dpf+egr=scr delete, Wagner FMIC, Bohl Diesel downpipe, full custom downpipe back exhaust and water meth. I am running a custom tune from Bimmer Performance Center. The car is consistently putting down 440 rear wheel hp and 655 ft. lbs. torque to the rear wheels on the dyno. It is my understanding that you lads are measuring power at the flywheel, which would mean that my #'s are approx. 18% lower than what they would measure there in the UK.

I have had zero problems to date running my current setup in terms of the transmission and associated power levels. This is not to say that I won't have issues in the future. It is important that you maintain the transmission as you do the engine, i.e. change fluids/ filter and replace the mechatronic seals for the valve body.

Thats good to hear your car sounds amazing. I did an ATF change 20k miles ago at 50k, so will do another one in 20-30k miles i think? Need to get meth soon

Do dyno runs change dependant on what gear was used? My car produced 363 wheel hp and 547ft lbs in 5th gear. What gear was your car in?

[russjonesr]

6 speed MT- I'm told that most dyno in 4th...but technically speaking 5th is the nearest 1:1 ratio. I took my car to be dyno'd we only did one 5th gear roll...he didn't like the fact that we were doing 176mph His dyno was a little old and more use to testing older Ford's ( RS2000, Sierra Cosworths)

1st Gear Ratio 4.055:1
2nd Gear Ratio 2.396:1
3rd Gear Ratio 1.582:1
4th Gear Ratio 1.192:1
5th Gear Ratio 1:1
6th Gear Ratio 0.872:

[mob17]

Originally Posted by russjonesr

6 speed MT- I'm told that most dyno in 4th...but technically speaking 5th is the nearest 1:1 ratio. I took my car to be dyno'd we only did one 5th gear roll...he didn't like the fact that we were doing 176mph His dyno was a little old and more use to testing older Ford's ( RS2000, Sierra Cosworths)

1st Gear Ratio 4.055:1
2nd Gear Ratio 2.396:1
3rd Gear Ratio 1.582:1
4th Gear Ratio 1.192:1
5th Gear Ratio 1:1
6th Gear Ratio 0.872:

Reason I ask is that I took my car to Surrey Rolling Road last week as they are highly praised on this forum. However he could not get a proper dyno run on my car, said its the first time it's happened to him. Max torque wasn't even 500ft.lbs so obviously something was wrong, I think it was either the car wasn't loaded properly or it was in 4th gear (he ran in 4th)

He was happy to take my money though, so I thought it may be a boost issue. However my local indy has confirmed boost is fine, no leaks.

I just want another dyno done, might try a local place.

[RajB]

Originally Posted by mob17

Reason I ask is that I took my car to Surrey Rolling Road last week as they are highly praised on this forum. However he could not get a proper dyno run on my car, said its the first time it's happened to him. Max torque wasn't even 500ft.lbs so obviously something was wrong, I think it was either the car wasn't loaded properly or it was in 4th gear (he ran in 4th)

He was happy to take my money though, so I thought it may be a boost issue. However my local indy has confirmed boost is fine, no leaks.

I just want another dyno done, might try a local place.

Interesting that. I went down there with Tin a little while ago and mine was throwing the odd error on the way down there but on the dyno seemed fine however could only top out on dyno at 375ish bhp as the curve just flatlined. Even at Pod the first run it went into limp mode then all other runs throughout the day were fine.

But Tins went on straight after mine and got 424bhp.

I've since upgraded the firmware and mine seems a little better but I do every so often get a 30FF and it goes into limp mode so there is something not quite right. Perhaps yours is the same as in there maybe a small not consistent issue somewhere under certain circumstances like mine.

[mob17]

Originally Posted by RajB

Interesting that. I went down there with Tin a little while ago and mine was throwing the odd error on the way down there but on the dyno seemed fine however could only top out on dyno at 375ish bhp as the curve just flatlined. Even at Pod the first run it went into limp mode then all other runs throughout the day were fine.

But Tins went on straight after mine and got 424bhp.

I've since upgraded the firmware and mine seems a little better but I do every so often get a 30FF and it goes into limp mode so there is something not quite right. Perhaps yours is the same as in there maybe a small not consistent issue somewhere under certain circumstances like mine.

Yeah perhaps,but I've never had limp modes or codes. And the car feels fine, doesnt feel like its lost any power. It did lose power at santa pod and that was the vacuum pipes,which have been sorted now.

But maybe there is a boost problem. Physically everythings been checked and no leaks are present. I checked boost pressude with the torque app, and it read 37psi. It includes atmospheric pressure so after deducting that it is 22.5, which is lower than stock. The boost should be 36-39psi according to Ecotune, and i'm sure this figure excludes atmospheric pressure.

However the car feels just as fast, definitely faster than stock, perhaps theres something wrong with my boost measuring methods...

[mob17]

Originally Posted by Broken_Gearbox

I loved reading this! Epic Mo. Well done! Go murder those M3s and secretly enjoy embarrassing those tail gating Audi's. Your car is the very definition of badassery!

Thanks matey! It is very enjoyable to drive. It doesn't look overly aggressive so its so much fun taking on much more expensive cars

Just want to get some confirmation that the car is boosting at the correct level, I have since found out that torque calculates the boost from the air flow and temp, so my low reading may be inaccurate, it certainly doesnt feel like its running lower than stock boost. Need to read the actual MAP sensor somehow.

I think the next few mods will be focused on handling, which is showing its weakness even more now with the extra power, i will finally be fitting the swift rear springs this week. I'm hoping this will reduce the rear movement at WOT and cornering.

[RajB]

Originally Posted by mob17

Yeah perhaps,but I've never had limp modes or codes. And the car feels fine, doesnt feel like its lost any power. It did lose power at santa pod and that was the vacuum pipes,which have been sorted now.

But maybe there is a boost problem. Physically everythings been checked and no leaks are present. I checked boost pressude with the torque app, and it read 37psi. It includes atmospheric pressure so after deducting that it is 22.5, which is lower than stock. The boost should be 36-39psi according to Ecotune, and i'm sure this figure excludes atmospheric pressure.

However the car feels just as fast, definitely faster than stock, perhaps theres something wrong with my boost measuring methods...

Certainly an interesting one then. Maybe no issues and just couldn't get the traction to get a proper dyno run for some reason but certainly strange.

[mob17]

Originally Posted by RajB

Certainly an interesting one then. Maybe no issues and just couldn't get the traction to get a proper dyno run for some reason but certainly strange.

Yeah thats possible as the car seems fine. Might just try and get a physical max boost reading somehow.

Anyways a little update. The 672lb/in rear swifts were fitted today. A bit annoying that some of the bolts in the toe arms were siezed. Also the alignment was done, with slightly less toe at the front.

The rear feels a lot better now i took it for a little spin and there is noticeably less squat, and less lateral movement when cornering hard. Feels more solid at the back, easier to feel what the car is doing and feedback re the grip is better now. Not sure if i need the subframe bushes, but like most suspension upgrades, i'll probably find something to change in a few months the more i get used to it.

I am still suprised how good the ohlins dampers are. I have upped the rear spring rate by 68%, but the ride is still very compliant. Even at 4 from full hard it handles speed bumps and potholes with ease, quite smooth. Also another effect of the 1 inch shorter swifts is that although my ride height is the sane, theres more adjustment to go up or down now, with the stock ohlins rear spring the height was adjusted to near the max.