its an n/a s5 engine s4 ecu and other electronics
any ideas? the water thermosensor has been replaced btw

 

How did you decide it has more power?

 

you can feel a signifigant difference between 4 and 6.5 k and its engough for me to write this, trust me its not just paranoia or whatnot.
im thinking it may be that the thermosensor is reading incorrectly and so at 150 my car gets the right amount of fuel but at 180 the ecu is dumping fuel. not sure though.
is there a way to test this?
btw my ecu throws no codes. i have a code puller led set in the cabin so i'd know and i have verified that they work

 

I honesly can't think of a reason for the temperature to make a difference. To my knowledge, the fuel injection is independant of the engine temps.

 

Maybe your intake is sucking in cooler engine bay air at 150 than at 180. The hotter the air the less dense it is which= less power.

I noticed when I had my Apexi filter on with no heat shield it would pull a lot harder when my car was not fully warm because the engine bay wasn't very hot so it was sucking up somewhat cool air. Then when it got to operating temps. it felt slow again. So I just put back my stock intake with a K&N filter.

 

well i know the ecu compensates for problems by dumping fuel (or so i have been told) too hot add fuel too cold add fuel too this too that add fuel. so thats what i am thinking now

 

Pepper's post makes sense. If you are sucking in cooler air then you get more power. What kind of intake do you have?

 

just a cone intake right now

 

Does it have a heat shield with a cold air supply going to the intake, IE headlight scoop?
If not I would put my money on what I said above. Your engine bay isn't as hot when it's not at normal operating temp. so you are sucking in somewhat cold air as apposed to hot air when your engine is at normal operating themps.

 

Why are you revving your engine so high before it's fully warmed up?

If you think something's wrong with the thermosensor, go test it. It's in the FSM.

 

no there is no shield. however as soon as i can get my hands on one i plan to use t2 manufolds and the t2 hood as a cold air intake by hollowing out the stock intercooler and welding shielding onto it. i think it'll work out, but we'll see

 

I dont think thats a good idea. The tII intake is totally different from the NA intake.

 

itll give me a shorter intake run, thus less low end but much more top end i think at least, the intake will most likely need an adapter plate, but many on here have turboed n/as using t2 manifolds, and been fine so it must bolt up somehow.

 

not to be a dick but is it clean? could be causing a restriction on the high end and a cooling problem

 

yeah, its one of the fine steel mesh ones, your supposed to just tap it out and its good to go