Rust bucket

The car was tuned stock and dynoed, then added LT's 3" Xpipe and 3" catback,dynoed again and made 50 more wheel HP.

skratch77

what was the before and after numbers?

One of your old posts says you got a custom tune and got no check engine light with the LTs

rizampi

Thanks to all
I understand that I will do a test ...
But try with a 80mm not 82mm tb

AKnight55

With the retune and if you get a bigger TB, think you will be in the 10s Skratch??

skratch77

That with a 180 pulley would be really close.ill be happy with 11.2 on pump gas.I guess newengland dragway just spent 6 million redoing the whole track so hooking up wont be a problem anymore.

KLR CLS

FWIW I am not selling anything either and I had a 42 whp gain from headers alone. They were also the only performance mods on the car, not even air filters. This was on the same dyno before and after the install within 5 hours with a stock tune. Scratch there are other variables on your car. Having a tune could drastically affect what gains you are seeing, but I can't explain your gains. Were there any cats on the car?

Anyhow,

Back to the TB, gains will be felt everywhere, especially when combined with an airbox. Throttle response is crazy. First time you roll into the throttle you will be more than happy. Not really scientific results but I gained peak 30whp(more lower in the band) from 82 TB and airbox however this was on different and lower reading dyno and severalmonths apart.