Hennytime

iTrader: (33)

id say a little more than that, my friend and i were at a dyno day and we switched his paper filter for my k&n and on his car it made 5rwhp/4tq difference

HTMtrSprt

Actually, that's not true...... the correct answer is 'it depends'. There are many factors that will affect the reading on a wideband. Remember..... the wideband still measures OXYGEN in the exhaust, NOT the A/F ratio in the combustion chamber. It's reading can be affected by such things as excessive reversion in the exhaust causing ambient air to be pulled into the tailpipe, exhaust leaks, incorrect ignition advance and, oh yeah, too much cam overlap causing intake air to be pulled through the head into the header and past the sensor. Tune for best HP.....not some ideal A/F ratio.

HiTech

Denom

iTrader: (2)

That's one of the reasons I hate modding a car. I had an Evo which I modded alot, but it wasn't running anywhere near the times of the other Evos w/ the same mods at the track.

I got lucky with this car. I think that your car just needs a serious dyno tune, from a reputable shop. It should be kicking out atleast 330whp IMHO.

vodas00ss

iTrader: (14)

your car may not have responded to the headers and stuff, but the car cant get away from the bottle...

MannyZ28

iTrader: (1)

Yeah those numbers are way off....I gained 30 rwhp and around 30 rwtq with headers and tune.

solocus

iTrader: (8)

It's a classic guys, see:

https://ls1tech.com/forums/dynamometer-results-comparisons/523101-why-my-dyno-so-low.html