Whats the max boost that can be run on a standard turbo computer/injectors before it starts causing dramas? Havn't touched it yet just getting a rough idea! cheers

an a8 or 'a6 with decomp gasket' will start to lean out after 10psi with NA injectors and 12psi with turbo injectors. note: Some engines will not favour more than 10psi without intercooling on pulp. although often seen it screwed up to 14 or 15psi but it's not really making much more power after 12psi If you can't help yourself, intercooling, colder plugs at smaller gaps will reduce the possibility of detonation, you can wind up your base fuel pressure to 40psi without changing the spray pattern or saturating the stock high pressure pump flow. Stock setups really should have 380cc injectors as a minimum as the stock injectors are way past 80% duty cycle after 10psi.

Quote: Originally Posted by bachig24u [View Post] an a8 or 'a6 with decomp gasket' will start to lean out after 10psi with NA injectors and 12psi with turbo injectors. note: Some engines will not favour more than 10psi without intercooling on pulp. although often seen it screwed up to 14 or 15psi but it's not really making much more power after 12psi If you can't help yourself, intercooling, colder plugs at smaller gaps will reduce the possibility of detonation, you can wind up your base fuel pressure to 40psi without changing the spray pattern or saturating the stock high pressure pump flow. Stock setups really should have 380cc injectors as a minimum as the stock injectors are way past 80% duty cycle after 10psi. yeah sweet. I have a front mount and adjustable rising rate pressure reg to throw in the mix. Its just a daily so i didnt wanna go spending 2g on a aftermarket ecu and another 1000-1500 on a fuel system as i've already got fullscale money pit... i mean project car happening! Not looking for unrealistic power from it, just more fun. Maybe turn the tyres a little harder Some original photos have not been recovered yet.

Pretty sure my n/a injectors lean out at 6psi lol. I melted spark plug tips. Running vlt injectors now tho.

Quote: Originally Posted by qwertsta [View Post] Pretty sure my n/a injectors lean out at 6psi lol. I melted spark plug tips. Running vlt injectors now tho. Could be something to do with intake temps rather than very low boost at just 6 psi. If the plug range was too hot to start with, intake charge too hot, too much timing or fuel delivery issue like mismatched injectors, a fuel regulator bleeding off or imminent pump failure, sometimes a poorly designed exhaust or intake, manifold or just simply too much BMEP in the cylinder to begin with (too high compression ratio) etc.

i ran 12psi no worries with standard set up, never pinged. had front mount, 3'' exhaust and was a A8 motor, standard fuel reg to

im running 12 psi 2inch zorst lol a8 motor no cooler lol and standard fuel reg.

I run 15 pounds and a standard ecu a8 motor