TwistedMetalMan

I ran 42# on a 4.6 with 8psi and a four valve head. It always ran a little rich (12 or so) according to the a/f gauge but that is fine for safety. My current 5.0 block drops to 26-28 psi at 30" vac. but ramps up fast to well over 40 long before you get to boost range.

Get yourself a A/F gauge. Error on the high side and work down from that.

1badblue50

Thanks twistedMetalMan ..................

1badblue50

Ok I got air fuel guage it is reading lean. What should i try next the car at idle is on 38lb of fuel.Now my other question is how do i now what injectors i have they are orange. need some feedback Help..... thanks

1991foxbody

I think the orange/yellowish color were the stock 19s. I could be wrong though, i know 24s are blue.

marx91

orange ones are def. #19

1badblue50

ok so that means i have 19lbs i will have to order 24lbs. Now does anyone know about the air/fuel guage meter why it says lean? what would i have to do? thanks again for the help. Oh am i to high on the fuel pressure? 38lbs-40lbs

1badblue50

ok i installed the 36 lb injectors and calibrated MAS. The car still needs more what else can i do.?

bouchermb

I just did a 5 psi SC on my pony and you might alrteady have done this, but you absolutely need a 190lph FP or may be even 255 lph. I did all the other mods you mentioned at the same time as I did SC, 73 MAF, 70 TB, upper/lower intake, FMU, AFPR, and the difference is amzing. Remember with new injectors, you'll need to have your MAF recalibrated and get the appropriate chip in the FMU too.

1badblue50

I got the injectors used with the MAF it was calibrated to the injectors.

1badblue50

I am going to need to get a chip done. And new fuel pump.