Solo Vette Posted May 10, 2009 Report Share Posted May 10, 2009 OK so I bought a car that someone screwed up, I saw screwed up because well I have built and screwed up enough of my own to know what a mess looks like. I have cleaned up most of the errors, but am still having some issues. Car is a Fox GT, engine 306, ported polished E7 heads, ported polished lower intake matched to the heads. Powerdyne BD11A supercharger with 10lb pulley, MSD6AL with MSD Boost Timing Master, Ford Racing computer for mass air conversion, 24lb injectors. Car runs great and has great drivability, however at the top of third and fourth terrible detonation. I backed the timing off, and added the BTM and did not seem to help much. The car has no FMU. I know what I need to do, but am looking for maybe some help with an immediate fix. I know the car is not getting enough fuel, I am going to step it up to 42lb injectors(increasing boost over the next few months) This winter I am going to install Trick Flow heads, and an intake, along with a different cam. The winter project is the reason I am avoiding having it tuned. I would rather have it tuned when I am done than to spend the money twice. I do not believe the car has been tuned, however I have not verified that yet. Just looking for some advice. Quote Link to comment Share on other sites More sharing options...
Stimmel1647545512 Posted May 10, 2009 Report Share Posted May 10, 2009 24 pound injectors are not enough fuel for boost at all, If I were you I could contact Gearhead on here he is a foxbody guru I had a similar problem he had the car running better than it ever has in under 15 minutes. His number and email are located in my signature below Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 10, 2009 Report Share Posted May 10, 2009 you could go to a 255lph pump and an adjustable rising rate fpr set your base pressure at 50psi it'll smoke some down low but should be close on the big end be carefull with bandaids on a boosted car though its a good way to torch a piston put an air fuel meter on it or get a couple dyno pulls with air fuel and see where its at Quote Link to comment Share on other sites More sharing options...
AJ Posted May 10, 2009 Report Share Posted May 10, 2009 yeah 24lbs injectors don't even sound close. i had to put 42lbs in the vette since the stock 28lbs would go lean at high RPM stock! Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 10, 2009 Report Share Posted May 10, 2009 you need 42 at the least in that thing. Quote Link to comment Share on other sites More sharing options...
Solo Vette Posted May 11, 2009 Author Report Share Posted May 11, 2009 Yeah I figured 42lbs would be the least. I have no clue what these guys were thinking, then again who doesn't love a good project. Hell the thing might have a chip in it, but I doubt it. Thanks for your help guys. Quote Link to comment Share on other sites More sharing options...
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