Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Kevin Wood]

Icing can happen in our climate too. It's due to the cooling effect of the throttle on the incoming air. Give it moist enough air when the engine's under light load and it can still ice up with the intake temperature well above freezing.

With this sort of tuning you are only going to get a significant improvement if you are modifying the most restrictive part of the system, so the first job is to determine if the throttle body is that part. If not, there's no point in touching it.

So, a back to back dyno session with the same car on the same day. Standard and modified throttle body, no other changes and see if it makes sense.

Of course, if you don't get a perfect fit between throttle plate and bore you will end up with idling issues and unbalanced flow to the two banks.

[TheBoy]

courtenay sport enlarged tb from original 64mm to enlarged 69mm

Ah, that useless bunch of morons.  Can't recommend *anything* they sell, if your TBs improved your car, that was more by luck, than it was to any kind of tuning skills that Courtney have



As others have hinted at, its unlikely the TBs are the restrictive place.  In fact, properly serviced, the intake isn't really restrictive.