NJ, please, stop spewing the party line. Have you ever dyno'd an Evo before and after with stock dp and larger DP? The power gains are negligible. Yes, no exhaust is best...3" is better than stock. However, the cat-back and cat are the MAJOR exhaust restrictions on the evo. Notice I said the DP doesn't REALLY make power...as in, it's very little difference. However, it does help with spool. No need to go all around the website trying to disprove or refute every little comment. Good God.

 

Is a fuel pump needed with a base flash, MBC, TBE? And what PSI is the MBC is set at?

 

 

With ix's a fuel pump is "not needed, but recommended." I didn't get one.

 

You speak with authority on a lot of things and I have found that you are wrong on them. Case in point was the wrong belief that at peak torque/boost the EVO runs 12.5:1 AFR. You were dead wrong on that one as I have shown you with not only my log but the logs from Evo_Kid. Now you make another ridiculous claim. It is very well known physics that turbos DO NOT like ANY back presssure and the stock dp is too small and produces back pressure. Replacing it with a larger diameter dp produces power.

If you have before and after dyno sheets to show that the power produced is negligible (which is against all the physics behind turbos) then please show us. Otherwise stop peddling these assertions as facts.

 

oh my

 

LBC in the Hizzzous!!!

 

well you kinda lost your own argument there, maybe you just need to be more specific, but you did get most of it right. a larger downpipe does NOT creat much more PEAK power in a near stock EVO with just basic performance upgrades. and NJ is correct in saying that turbos dont like backpressure, of course, BUT the decreased resistance in the exhaust path directly out of the turbine outlet does decrease spool time, Thus creating more power under the curve. and most likely notable increase in low end torque and throttle response. The sooner you get into boost is the sooner your going to make the power.

 

+1 for the answer. Is it some sort of secret or what? I bought an eflash last week and I have not been able to get an answer as to what psi I need to set my MBC.

 

well as much as I hate to do it, Wartalon is right. the dp power is negligable. On my VIII I hade just a test pipe, and cb on for exhaust with the stock dp. Ran the same times with my stocker and the 3" dp.

As far as back pressure not needed. You do need a lil. Especially if it's stock turbo and you're not running a high hp big turbo car. Everyone knows back pressure creates tq. Just to prove it go dyno your car with a stock dp and aftermarket. Just my .02 from my experience.

 

On my stock IX i didnt notice any power increase after a flash. I would think its easy to notice 30whp or 40 whp. I only noticed a diffrence after a mbc install set to 20psi.

 

You should have your boost at 22, not 20. Stock is a little over 20.

 

well in regards to where the boost should be after a flash, i would call whoever flashed it and see whats reccomended " guessing" isnt worth having to buy a new motor

 

That's why I've asked over and over again but he never answers....

 

i did it the cheap way too
new but bought 2nd hand megan downpipe 100
cut out 25
mbc 80
K &n filter kit 45$
flash 300

now ya can get teh ecuflash thing for like 150 i think idk.....

its nice to have as much power as people spending 3k on the 8's and 1500 on the 9'S for under 600 with the cutout welding done by a pro

even though i would like name brand parts...i find it hard to justify it...

cheers