I know it sounds a bit backwards but I bought my car with a supposed "tune" for the 2.76 pulley but it does not feel right and I don't trust it. I have a 3.4 that I want to put on the car until I can get it to HBH for a known good tune, is there anything bad about doing this? I want to drive the car as is until its professionally tuned.
Car Tuned for 2.76" will 3.4" hurt it??
- Thread starter racin4ds
- Start date
Why not just leave the 2.76 upper on and stay out of boost? It'll be fine like that until you get a tune.
If you went to the 3.4" upper, you'd most likely be pig rich...too rich...washing the cylinder walls rich (potentially anyway). You're better off with the 2.76 upper and limp
it around town. Just keep it below 3,500 rpm or so and you'll be good.
If you went to the 3.4" upper, you'd most likely be pig rich...too rich...washing the cylinder walls rich (potentially anyway). You're better off with the 2.76 upper and limp
it around town. Just keep it below 3,500 rpm or so and you'll be good.
^ What he said.
just stay out of boost and the tune won't matter, at least until you get it checked :-D
Good point, but damn its tempting! It builds boost so fast with that 2.76... 
The car will be fine with the 3.4 pulley. The car will only be rich under WOT and even then if the MAF table is close to dialed in then the car will adjust the fuel to the set A/F ratio.
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