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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Proede 2.0 Exhaust sytem.. Down piping from superspring, Cold intake with 109 octane



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      06-06-2007, 08:13 AM   #45
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Originally Posted by CEA 3 View Post
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.


when i finally finish my vette and get it off the lift ill be able to weld up set of DP.

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      06-06-2007, 09:52 AM   #46
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Originally Posted by y2b3k View Post
His experience speaks volumes, and just moving from the Xede platform to the Haltec EMS shows that Shiv thinks about creating a better OVERALL product, and not just increasing boost etc...
Haltec? Come again?

Is his piggyback based off that?

Also notice that Shiv did his runs on 93 octane. Can you find that anywhere in california?

If it turns out to be reliable on that tune, I would be able to run something like that. What was the max rating torque on the transmission again? Something like 450ft-lbs for the ZF?
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      06-06-2007, 09:59 AM   #47
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Originally Posted by itsbrokeagain View Post
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.

For the O2 sensor.. I would just added a Bung extender and see if it works.. made it at pepboys for 50cents on my EVO when i put a a DP>. basically you have to get a screwed in extender piece from pepboys and screw ur o2 sensor into that which lets it sit a few cm outside of the bung hole (lol bung hole) this should avoid the CEL at least it was a known quik mod for my evo back in the day
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      06-06-2007, 07:33 PM   #48
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Originally Posted by rambino View Post
For the O2 sensor.. I would just added a Bung extender and see if it works.. made it at pepboys for 50cents on my EVO when i put a a DP>. basically you have to get a screwed in extender piece from pepboys and screw ur o2 sensor into that which lets it sit a few cm outside of the bung hole (lol bung hole) this should avoid the CEL at least it was a known quik mod for my evo back in the day

Haha funny thing...I talked to one of my friends today and he said the exact same thing. Double up on the 02 bungs and keep it out of the exhaust stream. It will still read yet not throw a CEL.

On another note, the shop I'm going to work for is somewhat amped to try out some things on my car...so I'm assuming at one point or another there will be a full exhaust made in house, turbo back. Its going to be loud, and pricing I have no idea...that is if he decides to sell downpipes.

He is also a Unichip distributor, so I wonder how long it will take for them to come out with something I could test out
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      06-06-2007, 10:36 PM   #49
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sounds interesting
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