[Ilma]

Originally Posted by akk

Awesome explanation, thank you again! It very well could be the intercooler connections, because visually it looks like the previous owner installed an aftermarket intercooler on the car - i assume this because it doesnt have plastic boxes on the sides, but is all metal. No idea about the size or brand. Is there a way to find out? If i took off the plastic shield off the bottom of the engine bay or the bumper, would I see any markings on it? Maybe I shouldn't be running stage 1+...

Yes....that sounds like an aftermarket intercooler then.

Other than the excessive wastegate duty cycle I think that tune is working quite well on your car. The boost and timing targets are pretty conservative.

What gas are you feeding it? 94 octane or 91 octane?

[akk]

Originally Posted by Ilma

Yes....that sounds like an aftermarket intercooler then.

Other than the excessive wastegate duty cycle I think that tune is working quite well on your car. The boost and timing targets are pretty conservative.

What gas are you feeding it? 94 octane or 91 octane?

Mostly Costco 91, occasionally shell 91, and very rarely petro 94 (hard to find in windsor-Essex )

So is it a bad ic then? since my IATs are going too high? I see people saying theirs go like 20 degrees above ambient on pulls...
One thing to note, I was driving about 2 hours continuously before the pull (just cruising), not sure if that would affect anything, which is why I didn't mention it in the original post.

[gavin_0108]

I've been running jb4/bef for a little while but just went fbo and switched over the MHD stage 2+ 94CAD. Really enjoying it however when I took a glance at my log, noticed I wasnt hitting my boost target, however I'm by no means an experienced log reader lol. Just wanted to make sure everything else looks good, and then figure out the underboost issue from there 👍.

https://datazap.me/u/oiamo123/log-15...og=0&data=3-20

[allcaps55]

Wondering if someone could take a look at these logs and let me know what they think.

https://datazap.me/u/allcaps55/log-1...g=0&data=15-16

Ive gone through about a 1/4 tank of the E50 mixture and it feels like the car has been running phenomenally but after I took this log everything started to cut out when i got on the throttle. RPM would drop along with oil temp gauge and then it would cut back on. I luckily got home under light throttle but that has me concerned. Maybe the tune is just too aggressive and I should back off? I am in Colorado so thinner air along with shittier gas...

Running MHD Stage 2+ E50
Mods are as follows:
Downpipes, dual cone intake, vrsf exhaust
Stage 3 LPFP with BPM4 EKP
New Index 12 injectors
New NGK 97506 at .22
New bosch coils
60k on stock turbos

[Sgop335]

Originally Posted by gavin_0108

I've been running jb4/bef for a little while but just went fbo and switched over the MHD stage 2+ 94CAD. Really enjoying it however when I took a glance at my log, noticed I wasnt hitting my boost target, however I'm by no means an experienced log reader lol. Just wanted to make sure everything else looks good, and then figure out the underboost issue from there ��.

https://datazap.me/u/oiamo123/log-15...og=0&data=3-20

Wouldn't say there is an underboost issue. The boost response is slow, may be old turbos? Also at the start boost seems to flatline before picking up..must have felt sluggish?

[Recoiletiquette]

Hi im new here and this is my first post, but I've been having a limp mode issue at high rpm and was looking for some help. I'm not sure of what information I need to provide but my car is a 2007 335i. New coils, plugs, hpfp and battery all last week. Mods down pipes, charge pipe and bov. I just got MHD stage 2+ and I can post my log but I'm not sure what parameters I need showing on the graph. So just let me know and I'll post it. https://datazap.me/u/recoiletiquette...?log=0&data=22

[Saif2018]

Originally Posted by akk

Mostly Costco 91, occasionally shell 91, and very rarely petro 94 (hard to find in windsor-Essex )

So is it a bad ic then? since my IATs are going too high? I see people saying theirs go like 20 degrees above ambient on pulls...
One thing to note, I was driving about 2 hours continuously before the pull (just cruising), not sure if that would affect anything, which is why I didn't mention it in the original post.

If intercooler connections all check out ok then it could be a bad aftermarket cooler.

I'd follow the advice and replace all vacumn lines, if they haven't been done recently, and check both boost Solenoids and vacuum canisters,

I had a cracked nipple connection way back, underneath cannisters and some bright spark decided to tape the Vacumn lines to the cannisters nipple connection point was a good idea. Face-palm.

91 octane is pretty poor fuel.

Running higher octane fuel will also most likely eliminate your minor timing pulls.

[Saif2018]

Originally Posted by allcaps55

Wondering if someone could take a look at these logs and let me know what they think.

https://datazap.me/u/allcaps55/log-1...g=0&data=15-16

Ive gone through about a 1/4 tank of the E50 mixture and it feels like the car has been running phenomenally but after I took this log everything started to cut out when i got on the throttle. RPM would drop along with oil temp gauge and then it would cut back on. I luckily got home under light throttle but that has me concerned. Maybe the tune is just too aggressive and I should back off? I am in Colorado so thinner air along with shittier gas...

Running MHD Stage 2+ E50
Mods are as follows:
Downpipes, dual cone intake, vrsf exhaust
Stage 3 LPFP with BPM4 EKP
New Index 12 injectors
New NGK 97506 at .22
New bosch coils
60k on stock turbos

WGDC reaching near 80% thats quite high,

No timing corrections so that's good, have you replaced all vacumn lines, checked boost Solenoids and vacumn cannisters, Intercooler connections?

You want to eliminate any possibility of a boost leak, even a small one, before jumping to the turbos.

I would cut back from stage 2+ at the moment and run a less aggressive tune for the time being.

I don't know why you got new Bosch coils, you should have got Eldor ones or Delhi ones failing that.

What fuel are you running?

[Saif2018]

Originally Posted by Ilma

It's for people who drag race and their intercoolers and radiators heatsoak while waiting in the staging area......it provides forced mechanical airflow while the car is standing still in order to bring operating temps down.

Probably not something you would want to run all the time. Have you ever listened to your radiator fan at full blast?

Understood, since I don't drag race, probably never use it. Good to have the option though.

Thanks for the explanation.

Yeah I recall fan coming on after some serious consistent hard runs, man its loud.

To have it on all the time would drive me nuts

lol

[gavin_0108]

Originally Posted by Sgop335

Wouldn't say there is an underboost issue. The boost response is slow, may be old turbos? Also at the start boost seems to flatline before picking up..must have felt sluggish?

I'm at 3500 feet so maybe that has something to do with it? But yes, the car has 180k kms, so shes getting up there. I have a bad habit of building into the throttle vs just punching it, so the flatline was probably on my part.

[Saif2018]

Originally Posted by Godzilx

I'm consistently hitting 2-3psi under target and was wondering if anyone could point me in the direction to fix this. Wondering if it's a boost leak or bad wastegates as they're rattling a lot. I'm running an E30 mix on stage 1+. Any advice at all would be greatly appreciated.


https://datazap.me/u/godzilx/e30-har...solo=1&mark=54

Replaced all vacumn lines, checked boost Solenoids and vacuum cannisters and connection points?

Have you tried using wastegate rattle fix on MHD or JB4 to see of you can reduce/eliminate rattle?

There are some manual adjustments which you can try to fix rattle as well, you can can find them on YouTube.

Failing all that, could be your wastegates just not holding enough boost, I had similar problem, had to have turbos taken out and fitted with uprated wastegates to fix the problem.

[allcaps55]

Originally Posted by Saif2018

WGDC reaching near 80% thats quite high,

No timing corrections so that's good, have you replaced all vacumn lines, checked boost Solenoids and vacumn cannisters, Intercooler connections?

You want to eliminate any possibility of a boost leak, even a small one, before jumping to the turbos.

I would cut back from stage 2+ at the moment and run a less aggressive tune for the time being.

I don't know why you got new Bosch coils, you should have got Eldor ones or Delhi ones failing that.

What fuel are you running?

I've had the Bosch coils free lifetime warranty through FCP for a good 5 years now so just didn't feel like spending money on the Delphi ones. Haven't had any issues with them so far

I have recently replaced the vacuum lines but not the boost solenoids. I'll put those on the list.

Currently running an e50 mix

[Kalbs59]

I have a 2008 335xi I have full bolt-ons however the car feels sluggish from a stop to about 3k rpms
Mods:
xhp stage 3
Vrsf 7.5 intercooler
Vrsf Downpipes
Vrsf charge pipe
Vrsf outlets
Vrsf Relocated inlets
Turbosmart diverter valves
Fuel it stage 2 fuel pump
Ngk ILZKBR7B-8DG Spark Plugs gapped to 0.022 with new eldor ignition coils
index 12 injectors

I am using mhd v9.0 stage 2+ I have two logs one of E50 and of 93 octane
https://datazap.me/u/kalbs59/log-159...og=0&data=3-22

[akk]

Originally Posted by Kalbs59

I have a 2008 335xi I have full bolt-ons however the car feels sluggish from a stop to about 3k rpms
Mods:
xhp stage 3
Vrsf 7.5 intercooler
Vrsf Downpipes
Vrsf charge pipe
Vrsf outlets
Vrsf Relocated inlets
Turbosmart diverter valves
Fuel it stage 2 fuel pump
Ngk ILZKBR7B-8DG Spark Plugs gapped to 0.022 with new eldor ignition coils
index 12 injectors

I am using mhd v9.0 stage 2+ I have two logs one of E50 and of 93 octane
https://datazap.me/u/kalbs59/log-159...og=0&data=3-22

Is it turbo lag?

[Saif2018]

Originally Posted by allcaps55

I've had the Bosch coils free lifetime warranty through FCP for a good 5 years now so just didn't feel like spending money on the Delphi ones. Haven't had any issues with them so far

I have recently replaced the vacuum lines but not the boost solenoids. I'll put those on the list.

Currently running an e50 mix

Ok, if you got lifetime warranty that makes sense.

Check the charge pipe connections and intercooler connections as well just to be on the safe side. Also those vacumn canister connection points, especially at the bottom which isn't visible unless you take the cannisters out.

[Kalbs59]

Don't think so i didn't feel it as laggy when the car was on stage 1+

[Saif2018]

...

[Saif2018]

Originally Posted by Kalbs59

I have a 2008 335xi I have full bolt-ons however the car feels sluggish from a stop to about 3k rpms
Mods:
xhp stage 3
Vrsf 7.5 intercooler
Vrsf Downpipes
Vrsf charge pipe
Vrsf outlets
Vrsf Relocated inlets
Turbosmart diverter valves
Fuel it stage 2 fuel pump
Ngk ILZKBR7B-8DG Spark Plugs gapped to 0.022 with new eldor ignition coils
index 12 injectors

I am using mhd v9.0 stage 2+ I have two logs one of E50 and of 93 octane
https://datazap.me/u/kalbs59/log-159...og=0&data=3-22

There is some minor turbo lag below 2k on N54's, that's normal

By 2.5-3k turbos should ramp up to full boost quick.

This isn't a good log, you lifted off about 5.5k rpm.

you need to have DSC fully off, hold it down for a few seconds till it goes off completely, switch to manual gear shift, get to 3rd gear, also you need to do full throttle log from 2.5k rpm (3rd gear) to at least around 6.5k rpm

Repost log after doing the above.

[Saif2018]

Originally Posted by Kalbs59

Don't think so i didn't feel it as laggy when the car was on stage 1+

Turbo response looks normal.

[Godzilx]

Replaced boost solenoids and it's almost perfect

https://datazap.me/u/godzilx/1-e30-5...38;data=3-4-22

Figured out my front turbo wastegate is the one rattling so I'll have to do some research to figure out how to adjust it

[Saif2018]

Originally Posted by Godzilx

Replaced boost solenoids and it's almost perfect

https://datazap.me/u/godzilx/1-e30-5...=1&data=3-4-22

Figured out my front turbo wastegate is the one rattling so I'll have to do some research to figure out how to adjust it

[Kalbs59]

redid the log

https://datazap.me/u/kalbs59/log-159...og=0&data=3-21