finding ideal fuel pressure
 

how can i do it (without a dyno tune)? im trying to find the ideal fuel pressure for my mustang. this is what i have so far:
i have it set at 39 (vacuum off). and the plugs are a nice golden brown. although, my car is having a hard time starting when hot and the oil smells like gas.
im not getting any smoke out of the exhaust or anything.

thank you,
adam

Take it to the track and make some passes with different pressures

anybody else?
i would rather do it in my driveway.

thanks,
adam

wouldnt we all....

theres got to be some way to do it to a point where its within reason. i dont even know if im there....

give some suggestions at least....

thanks,
adam

Sorry, it just doesn't work that way. It's not even as easy as Mach 1 suggested. The only way to really do it right is to take it to a dyno with a wideband O2 sensor, figure out what the optimal air/fuel ratio is and then have a chip made. I'm working on a longer description about why this is so and I will post it later when I get the time.

thanks a lot!

i just want to get it to a point where im not going to wash down the cylinder walls and contaminate my oil (my oil smells like gas). like a "safe" range...

thanks,
adam

I did a self tune out in the middle of Now where on the street took the G-tech and took it up to 60mph and I got a 0-60 Did it at diff fuel pressure and I got it ruuing good
on the dyno they got about 10 more HP But I did ot good on my Owen doing it that Way YOU MUST drive it hard to find out Ithere Dyno Track or Out in the middle of no where.

ok thanks guys...

do you think because my oil smells like gas i am rich? but on the other hand my plugs look perfect and im not getting any smoke...

thanks,
adam

Make sure that you don't have a faulty FPR. It's possible for fuel to be sucked into the intake via the vacuum port. Also, make sure that your PCV valve is working correctly. Both of these things can cause a hard start problem.

well i know my FPR doesnt leak any, but the PCV is interesting...

right now i have the PCV hooked up like normal, but the tube that goes to the TB from the valve cover is no longer there. i have a breather on the valve cover. the reason i did this id because i have a TB from an explorer (no provision for that tube). so i just stuck a breather on the valve cover.

what should i try first to fix this IF its the problem...?

thanks,
adam