Quote:
Originally Posted by ghoonk
Thanks, Warr. I noticed several things when I changed back to the stock airbox and JDM DV
1. turbo whine and intake flutter less prominent (obviously)
2. boost response slower
3. boost spike was lower by 1 to 2 psi, taper was also lower
4. exhaust sounded less loud
5. smoother to drive
In short, my Evo felt like it had its nuts cut off. No regrets going back to the HPI cone air intake and the GReddy - the car pulls harder and sounds more aggressive.
Warr, from your experience, could the tune have been set up in a way that required the cone air intake? I'm thinking that is unlikely, but I know little about tuning.
And yes, all hoses were tight  |
Oh hell yes. You CANNOT add (or remove) an intake if you're tuned for the opposite situation. We always tell people not to even touch their stock intake unless they plan to get tuned immediately. Likewise, if you are tuned for an intake, switching to the stock box will throw everything off. Cone intakes make a big difference in ariflow across the MAF, so the tune has to be adjusted quite a bit. Also, MAF pipes (intake-to-turbo) make a big difference, so something like the Injen is going to require a much different tune profile than a stock airbox with stock MAF hose.
