+1--- like i said 89mustangfive0--- My car has some decent mods (read sig) plus some fuel upgrades and i'm at 41psi @ idle... and after checking my plugs every 3-4months i still get that grey'ish tint to them, but my tune says it's all good.... Just wait for the tune... When your car is warming up. Do you smell the exhausteasily?- Kinda like gas fumes--- you know like a rich burning car? if so, it's not lean.... just need a tune.

 

yes lol i can smell fuel on start-up now that i bumped the fp up...

 

its rich at idle put itthrough the rpms--- who knows until you tune it. Fuel Pressure should go up w/ rpms.---- Lean will actually pop head/piston pretty much blow up... you can never go wrong with being rich--- There is such thing as being too rich... Wait for the tune you'll notice a diffrence.

 

yea i was just worried about wrecking stuff its my dd so im gonna be carefull driving it till the tune

 

i drove mine for about 1yr w/out a tune.... although i have the Zex n20 kit-- so therefore really no need to... and the guys that built knew what they were doing. Once i got stationed here, thats when i forked out the $$$ and got it dyno tuned. tune time + 3 pulls (on pump gas)was $475... Car runs betters, still has a rough idle (due to the cam), lill better gas mileage (although i dont care its a weekend car), and it ever revs a lill faster. Race gas tune was $300- pretty much the same as above (exceot the mileage part)but itpulls harder onracew/ n20-

514ftlbs race gace- n20
491ftlbs pump- n20

492rwhp n20 race gas
474rwhp n20 pump gasn20

321rwhp N/A- pump gas
331ftlbs N/A- pump gas

You'll prolly notice some of the same changes.

 

yea deffinelty better to be rich then lean, they have all told you correct, id just leave your fuile pressure between 41-44 till your tune and just be easy with it, you might have a injector issue or clogged fuel rail, (happend to me) also whats the cobra injectors? are they 24lb if i rember? or 30lb. make sure the mass air is correctly calibrated, good luck

 

cobra is 24lb injectors.

 

i have 24s on the car and a cobra maf for the injectos...i picked up a c&l maf and i have 30 pounders on the way ( got a sickkkk deal on them)