Hi all, I need your help before I drive myself off a cliff with my GT (3.2). I sold my 3.0 GTV last year to buy my GT and the more I drove the GT the more I was surprised that it felt slower than the GTV and not just by a bit, the 3.0 felt significantly faster throughout the bottom end right through the rev range. The GT is still a quick car don't get me wrong but it felt a way off my GTV. Note the cars have the same kerb weight (GT is actually a bit lighter so it should be faster by all accounts at the worst at least as quick).
The cars both have the same spec, CF2 Manifolds, stainless cat back exhaust, custom remap. Q2/Quaiffe. I love my GT in every way the handling, the looks and the sound, but after lots of driving I've realised it has a definite power issue which is exasperated under specific driving conditions (mostly on an uphill stretch of road/under load). Here's the best way I can describe it:
At part throttle, going up through the revs from 2000 RPM, at around 3500 RPM it feels like the car is being 'choked back' or restricted as if its being starved of fuel. Its as if the power is trying to unleash but its being reigned in massively so the revs feel like they're rising much flatter than they should be. It feels like just before its meant to pull away its getting choked back. Here the work its had done:
Fuel pump replaced
Spark plugs renewed
Air Filter cleaned
Cam Belt Timing adjusted
Checked air hoses to plenum chamber for air leaks
Injection/Fuel Cleaner used
Pre-cat Lambdas replaced and ECU reset (one Lambda was white and dis-coloured)
After all this, the problem is still there and its driving me insane. The car starts on the button and never fails, it just has this power issue. The computer doesn't ever have any errors, it doesn't misfire its just flat and being held back. Most people would drive it and think I'm mad as it is a very powerful car but I know its not running as it should be.
I know this because I drove it a couple of weeks ago and for 15 minutes from start up its power was completely unleashed, it felt like a completely different car that would have left my GTV for dead. Then after turning it off and the next start up the power issue came back. The only difference that I can think of to normal was that it was very low on fuel (as it was about to have the fuel pump replaced).
I have also discussed this it in another thread where I was comparing the power difference of a GT 3.2 to a GTV here:
http://www.alfaowner.com/Forum/alfa-...3-0-litre.html (Alfa GT 3.2 faster than GTV 3.0 Litre?)
but started this thread as I now know there's a mechanical issue. I really would appreciate some thoughts and ideas before I book it into my Alfa specialist again as I'm all out (of ideas and money)!