This is topic driveability problem. in forum Tech Talk at Northern California Ford Owners  .


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Posted by Loren (Member # 925) on :
 
I just put in some 42 lb injectors w/ prom calibrated meter in a car that doesn't have an adjustable fuel pressure regulator. It also does not have an FMU. It idles OK with a vacumm of around 18. When you give it gas with a load on the engine it sputters and floods after about 5 seconds. I've got a aeromotive adj fuel pressure regulator and a FP guage I'm gonna put on. Does this sound like it might solve my problem? thanks
 
Posted by st5150 (Member # 51) on :
 
What is the rest of the combo? A custom chip is almost a must for good drivability with most 42 and 50 lbs injector combos.
 
Posted by Loren (Member # 925) on :
 
Novi 2000, stock 5.0 block/heads. It's getting a custom chip/dyno very soon. I just need to be able to get it there
 
Posted by 91sleeper (Member # 779) on :
 
could it be too much for the combo?
 
Posted by 99gt-UJSTLST (Member # 584) on :
 
quote:
Originally posted by Loren:
I just put in some 42 lb injectors w/ prom calibrated meter in a car that doesn't have an adjustable fuel pressure regulator. It also does not have an FMU. It idles OK with a vacumm of around 18. When you give it gas with a load on the engine it sputters and floods after about 5 seconds. I've got a aeromotive adj fuel pressure regulator and a FP guage I'm gonna put on. Does this sound like it might solve my problem? thanks
it sounds like you dont have enough fuel pressure for what you got on it
and I would not floor it if I was you couse with out a tune it will blow the head gaskets even worse you can blow you motor

I would add a walborrow 255 inline fuel pump
and add the fuel pressure reugaltor also
I really suggest you get it tuned so that it will run the best and no kaboom

hope this helps
 
Posted by Loren (Member # 925) on :
 
Forgot to add its got a AFM powerpipe, 255 lph intank pump, 44psi w/vacuum off. It seems to have trouble when the rpm's go below 1000. I thought I would try rotating the Pro-m. I'm hoping that the chip will fix this! Thanks for the help. It's supposed to be dynoed today.
 
Posted by Black88GT (Member # 394) on :
 
loren, how did the dyno go? Did the pos make it there? LOL
 
Posted by Loren (Member # 925) on :
 
Yeah i was just out swinging a tight one. Got a bad spark plug wire or something still. Breaks em loose in the first 3 gears. I think the owner will be happy.
 
Posted by Loren (Member # 925) on :
 
Here is the dyno. Not too bad for a comptely stock 144K motor. -
 
Posted by Loren (Member # 925) on :
 
ok second try. -
 
Posted by Black88GT (Member # 394) on :
 
Wow, What do you think it would run in the 1/4?
 
Posted by 2K2GT (Member # 1542) on :
 
i bet it will only do mid 14's at best....lol [Cool]
 
Posted by st5150 (Member # 51) on :
 
Not bad. With out an FMU, an inline pump won't aid you much.... not to mention the 255 is plenty for your setup.

So did the chip fix your drivability problems? When you say stock 114K miles, are you talking 100% stock exhaust, 192^ thermostat, ect?
 
Posted by Black88GT (Member # 394) on :
 
the motor has 144,000 on the clock. I think the car has headers, Bassani x, and flows. The motor is stock.
 
Posted by Black88GT (Member # 394) on :
 
quote:
Originally posted by 2K2GT:
i bet it will only do mid 14's at best....lol [Cool]
I was hoping for 14.8, at least your optimistic LOL
 
Posted by StoplightWarrior (Member # 211) on :
 
So wait, is Loren selling the car??
 
Posted by Black88GT (Member # 394) on :
 
quote:
Originally posted by StoplightWarrior:
So wait, is Loren selling the car??
Where did that come from?
 




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