[LACA335i]

I was just curious how much hp n lbs torque more can i get from all of the configuration. I want to see how fast can i go..0-60 n 1/4 miles.. anyone have any idea?

[CASHBY]

well with DP's alone I think we are going to make a good amount of power... and with the new 100 octane file (if it ever comes out) the car should put down 380-400whp is my guess on 100 octane, no cats, PROcede, full turbo back exhaust.

Like I said before, on my A4 2.0t I made 19whp and 43wtq just by removing the cat and putting downpipes on. and that is on a 4cyl 2.0 turbo....so i would love to see what our 3.0 6cyl Twin Turbo could do.

cold air intake will do almost nothing though...the stock system is good for a lot more HP.

[Terry335]

Originally Posted by CEA 3

well with DP's alone I think we are going to make a good amount of power... and with the new 100 octane file (if it ever comes out) the car should put down 380-400whp is my guess on 100 octane, no cats, PROcede, full turbo back exhaust.

Like I said before, on my A4 2.0t I made 19whp and 43wtq just by removing the cat and putting downpipes on. and that is on a 4cyl 2.0 turbo....so i would love to see what our 3.0 6cyl Twin Turbo could do.

cold air intake will do almost nothing though...the stock system is good for a lot more HP.

How long does it take to make a 100 octane map, an hour or two with a few days of testing? I don't see what the holdup is.

[itsbrokeagain]

still the question above all remains...


What is anyone doing about the rear 02 sensors? Its getting me frustrated at the fact people don't want to spill the beans. Do people want to make like $1000 off some resistor mod?


I guess its time to break out the N54 engine book and dig through some schematics....


And another thing..why the hell do you people want 100+ octane maps? To be a dyno queen? Give me a break. All your tuning should be realtime, realworld scenario.

I can't wait to see the first dyno of '500 hp!!!' with C16 and 17psi, spraying the intercooler with water or C02 and dynoing in the winter and a correction factor of 5. So at 5972rpm....that one moment..it peaked at 500hp.

This is rediculous.

[CASHBY]

Originally Posted by itsbrokeagain

still the question above all remains...


What is anyone doing about the rear 02 sensors? Its getting me frustrated at the fact people don't want to spill the beans. Do people want to make like $1000 off some resistor mod?


I guess its time to break out the N54 engine book and dig through some schematics....

Rumor has it that the 02 sensor doesnt even throw a CEL with out the cats on.

I ran my exhaust off with the post 02 sensors completley exposed and didnt throw a CEL....there was one member on the board who said he had DP's but wouldnt give any info on them, and said he didnt throw any CEL with the cats being out.

so lets just hope it doesnt throw a CEL.....but IIRC Shiv said he can bypass that with a different map.

[Terry335]

Originally Posted by itsbrokeagain

still the question above all remains...


What is anyone doing about the rear 02 sensors? Its getting me frustrated at the fact people don't want to spill the beans. Do people want to make like $1000 off some resistor mod?


I guess its time to break out the N54 engine book and dig through some schematics....

Off the shelf simulators are $60 a pair, should work fine. You can probably also just reset the ECU every few weeks, it seems to take awhile to trigger a code according to others that have tried it.

[Terry335]

Originally Posted by itsbrokeagain

And another thing..why the hell do you people want 100+ octane maps? To be a dyno queen? Give me a break. All your tuning should be realtime, realworld scenario.

It's for people that race, sometimes when your car has more power it makes winning a race easier...

[CASHBY]

Originally Posted by itsbrokeagain

And another thing..why the hell do you people want 100+ octane maps? To be a dyno queen? Give me a break. All your tuning should be realtime, realworld scenario.

I can't wait to see the first dyno of '500 hp!!!' with C16 and 17psi, spraying the intercooler with water or C02 and dynoing in the winter and a correction factor of 5. So at 5972rpm....that one moment..it peaked at 500hp.

This is rediculous.

are you serious? ... I want it because I love having a powerful car at the track and on the streets.... and yes we want to see what this car can really put out....and on 91 octane its just not going to make its peak potential power and the quest for more HP is always going to be there. this is realtime realworld shit.... if 100 octane map is avalible and it makes a shitload more power, then guess what....myself and everyone else are going to take the thing out on the streets in the realworld and drive it as much as we can like that.

does someone in the olympics show up in their street shoes or their running shoes? shit they show up with the best they have and ready to give it everything they have.....and that is why we want a 100 octane map...we want to see what this thing has.

with my Big Turbo A4 I ran race gas all the time daily driven.

you basicly asked why does anyone want to make more horsepower and have a faster car.

[PresaMat]

The person running downpipes is also stating that his AFR may be off... so im wondering even if no CEL if its messing with his afr. Could this be possible?

[itsbrokeagain]

Originally Posted by CEA 3

Rumor has it that the 02 sensor doesnt even throw a CEL with out the cats on.

I ran my exhaust off with the post 02 sensors completley exposed and didnt throw a CEL....there was one member on the board who said he had DP's but wouldnt give any info on them, and said he didnt throw any CEL with the cats being out.

so lets just hope it doesnt throw a CEL.....but IIRC Shiv said he can bypass that with a different map.

Well the post 02s being exposed...if the cats are still ahead of them, regardless if you have no exhaust or not...they will still work The cat's drop the temperature and change the a/f reading to what it likes to see. If you unscrewed the 02s and let them dangle under the car..then yea I can see it throwing a check engine light at one point...after its tried to correct for the overlean factor.


The rear 02s always run at a reading of .96V to over 1V....way different from the regular 02s that fluncuate from .4V up to .99V. Ive sampled the rear 02s off the GT1 tool....and they will hardly move..they usually sit at 1.01 to 1.02V..they don't cycle or anything.

I will ask my shop foreman tomorrow to see if he can shed more light on the idea.

If they don't get affected, then out the cats go. I will fab up a set of downpipes at the new job during the summer (yes leaving BMW in two weeks for a Porsche fabrication shop) and let you people know how it goes. I still have my Ins at the dealership so it wouldn't hurt to stop by on a saturday and hook it up to the GT1 to see what it reads.

[CASHBY]

Originally Posted by Terry335

Off the shelf simulators are $60 a pair, should work fine. You can probably also just reset the ECU every few weeks, it seems to take awhile to trigger a code according to others that have tried it.

True, even if it does throw a CEL... it will not go into limp mode. you will have nice little light on your dash, but like Terry said you can always reset it very easily...

[CASHBY]

Originally Posted by itsbrokeagain

Well the post 02s being exposed...if the cats are still ahead of them, regardless if you have no exhaust or not...they will still work The cat's drop the temperature and change the a/f reading to what it likes to see. If you unscrewed the 02s and let them dangle under the car..then yea I can see it throwing a check engine light at one point...after its tried to correct for the overlean factor.


The rear 02s always run at a reading of .96V to over 1V....way different from the regular 02s that fluncuate from .4V up to .99V. Ive sampled the rear 02s off the GT1 tool....and they will hardly move..they usually sit at 1.01 to 1.02V..they don't cycle or anything.

I will ask my shop foreman tomorrow to see if he can shed more light on the idea.

If they don't get affected, then out the cats go. I will fab up a set of downpipes at the new job during the summer (yes leaving BMW in two weeks for a Porsche fabrication shop) and let you people know how it goes. I still have my Ins at the dealership so it wouldn't hurt to stop by on a saturday and hook it up to the GT1 to see what it reads.

True but on most cars with those even exposed that much it will throw a CEL.... i know it did on my audi and there was a good 6 inches of piping after the post 02.

good luck with the new Job!!! HOpe everything works out.

Also if you beat me to it, let me know how your DP's turn out. I am trying to work up a set myself.

[itsbrokeagain]

Originally Posted by CEA 3

you basicly asked why does anyone want to make more horsepower and have a faster car.

Not exactly. I have no problem making more horsepower. Im just saying on a normal basis. Not everyone here has the $ to plunk down to fill the tank with 100 unleaded at your local shell or sunoco. That stuff is reaching $8.50 a gallon here. If you drive your 335 everyday..thats a very expensive tank of gas to putz to and from work in.

However...if you plan to track your car all the time, then I have no problem with a 100 or 109 leaded map.

Shit drive around with race gas eh? Yeah I remember those days. I did it myself back in 2001. 110 was $5 a gallon and the Porsche took 17.5 gallons of the stuff . Filled the tank in my 951 with it every 4 days and ran the bejesus out of it. I stopped doing that because it was starting to turn into me working my ass off at my job just to fill the tank.

We get Ultra 93 here, so thats what I was coming from...and its very easy to make 4-500 hp on 93. I forgot you west coast guys got that 91 octane dinosaur piss you call gas

Long story short: I would like to see a map with downpipes and normal pump gas...something that you can drive around in everyday, and not worry about knocking or pulling timing.

[CASHBY]

Originally Posted by PresaMat

The person running downpipes is also stating that his AFR may be off... so im wondering even if no CEL if its messing with his afr. Could this be possible?

unfortunently SuperSprint released 2500 dollar Downpipes with NO R&D or Data behind it...so we wont know till one of us give it a try.

im still lost how they came out with 2500 dollar DP's and had no Data to back it. ahah.

[itsbrokeagain]

Originally Posted by CEA 3

im still lost how they came out with 2500 dollar DP's and had no Data to back it. ahah.

I think its the fact that they use OEM manufactured (Boysen I think its spelled) cats....OEM cats will run $1700 each for an M3..and theres two of them. Its on their website.

[CASHBY]

Originally Posted by itsbrokeagain

Not exactly. I have no problem making more horsepower. Im just saying on a normal basis. Not everyone here has the $ to plunk down to fill the tank with 100 unleaded at your local shell or sunoco. That stuff is reaching $8.50 a gallon here. If you drive your 335 everyday..thats a very expensive tank of gas to putz to and from work in.

However...if you plan to track your car all the time, then I have no problem with a 100 or 109 leaded map.

Shit drive around with race gas eh? Yeah I remember those days. I did it myself back in 2001. 110 was $5 a gallon and the Porsche took 17.5 gallons of the stuff . Filled the tank in my 951 with it every 4 days and ran the bejesus out of it. I stopped doing that because it was starting to turn into me working my ass off at my job just to fill the tank.

We get Ultra 93 here, so thats what I was coming from...and its very easy to make 4-500 hp on 93. I forgot you west coast guys got that 91 octane dinosaur piss you call gas

Long story short: I would like to see a map with downpipes and normal pump gas...something that you can drive around in everyday, and not worry about knocking or pulling timing.

Agree.... but like we have all said...you ahve to pay to play.... I lived in HB and had access to it all the time around me. My favorite was to fill up with race gas, unbolt my exhaust and go ripping down PCH on a nice day. Turned some heads and lots of fun....

Ill post the graph of my Audi on 91 octane with just a chip. Before and After the cat Delete. 19HP & 48lb-ft Torque @ 2100RPM to the WHEELS on the Dynometer with just the cat delete....im guess the 335 will be a lot more...but even these numbers i would be more than happy wiht.

[Terry335]

Originally Posted by itsbrokeagain

I think its the fact that they use OEM manufactured (Boysen I think its spelled) cats....OEM cats will run $1700 each for an M3..and theres two of them. Its on their website.

I guess I shouldn't have thrown away my secondary cats afterall...

[Terry335]

Originally Posted by CEA 3

Agree.... but like we have all said...you ahve to pay to play.... I lived in HB and had access to it all the time around me. My favorite was to fill up with race gas, unbolt my exhaust and go ripping down PCH on a nice day. Turned some heads and lots of fun....

Ill post the graph of my Audi on 91 octane with just a chip. Before and After the cat Delete. 19HP & 48lb-ft Torque @ 2100RPM to the WHEELS on the Dynometer with just the cat delete....im guess the 335 will be a lot more...but even these numbers i would be more than happy wiht.

It's hard to say, the 335 has a long exhaust but its a decent size for the power. I think a good downpipe will probably be worth 10-15rwhp on its own, but will also allow you to run a little more timing and/or boost that might be worth an addl 10rwhp.

[itsbrokeagain]

Originally Posted by Terry335

It's hard to say, the 335 has a long exhaust but its a decent size for the power. I think a good downpipe will probably be worth 10-15rwhp on its own, but will also allow you to run a little more timing and/or boost that might be worth an addl 10rwhp.

Just have to make sure the wastegates can keep up with the additional flow.

I think we might be creating a big tenancy to boost spike...which will throw the CEL.

But the wastegate is huge compared to the exhaust wheel itself...so maybe we can get away with it? So far 2 people running it without issues..but Id like to see some sampling when boost comes on to see what timing is doing.

[CASHBY]

Originally Posted by Terry335

It's hard to say, the 335 has a long exhaust but its a decent size for the power. I think a good downpipe will probably be worth 10-15rwhp on its own, but will also allow you to run a little more timing and/or boost that might be worth an addl 10rwhp.

are you saying just a good size Downpipe with stock cats, or downpipe with no cats.

If your saying a Bigger DP with the stock cats, yea i think we can make that power, but with out cats and a good downpipe i think we will make more.

[Terry335]

Originally Posted by itsbrokeagain

Just have to make sure the wastegates can keep up with the additional flow.

I think we might be creating a big tenancy to boost spike...which will throw the CEL.

But the wastegate is huge compared to the exhaust wheel itself...so maybe we can get away with it? So far 2 people running it without issues..but Id like to see some sampling when boost comes on to see what timing is doing.

I don't think that's an issue, the wastegates are large and they default open (sort of backwards from a normal one).

[Terry335]

Originally Posted by CEA 3

are you saying just a good size Downpipe with stock cats, or downpipe with no cats.

If your saying a Bigger DP with the stock cats, yea i think we can make that power, but with out cats and a good downpipe i think we will make more.

I'm saying no cats. It would be great if it makes more, but hard to tell. I wish I knew how to weld.