Joined
·
534 Posts
Here's the story...the car was recently in my garage for about a month getting alot of new parts. I got a new adjustable wastegate actuator arm (set at stock setting for now), new solenoid, new vacuum hoses, new pcv valve, new plugs (CR43TS), new heavy duty intercooler hoses, and all new exhaust which includes Poston's 3" DP with hi-flow CAT, and the 2.5" Hooker exhaust with the turbo mufflers...
Now here's the problem...the car slightly hesistates to get going from a stop or a light roll...when I 1/2 throttle it...the boost is fine and hits about 10 psi and no problems...when I 3/4 or try to go WOT, the boost goes all over the place and the car goes herky-jerky until I let off the gas...
Now I checked all hoses and such and they are tight and secured...I know for certain the wastegate rod is the stock length...and I know there are no exhaust leaks...and the turbo is in great shape...and no I do not have a scan tool yet which is a no-no!
So here's my conclusion to this problem...I still have the stock fuel pump and regulator (70,000 miles), and I think when I try to punch it, I am severely leaning out and can't run the full boost because there is not enough fuel...everything else on the car is pretty much stock and in good working order...but I think the pump and regulator need to go
What are your guys' thoughts about this? am I right and will changing these two things clear up the boosting problems??? Thanks for any help.
------------------
http://www.angelfire.com/in4/d0n_3d/
1987 Buick Grand National - 70,000 miles, Stock engine: Poston chromed MAF pipe, homemade cold air induction system w/ 9" K&N air filter behind headlights, Poston 3" Downpipe with high-flow CAT and test pipe, 2.5" Hooker cat-back exhaust system, adjustable wastegate actuator set at 15 lbs of boost on 93 octane for now until fuel pump and regulator are upgraded (coming soon), K&N breather by-pass kit, ANS Performance 93 octane street/strip chip, throttle body coolant lines blocked, 160 degree thermostat, removed 1 screen from MAF sensor and removed intercooler screen, CR43TS spark plugs, BFG P255/60/R15 all-weather rear tires... first track times next spring=(
1995 Mercury Cougar XR7 - 87,000 miles, Stock 4.6L V8 Engine: dual exhaust out the rear, modified air-box with cold air induction, modified chip, adjustable fuel pressure regulator, P245/70/R16 all-weather rear tires; 14.9 @ 92mph
"Have U Been Beat...By A Grand National Lately?" <--many have been
Note to all Ford/Chevy/Import owners: BUICK OWNZ J00
Now here's the problem...the car slightly hesistates to get going from a stop or a light roll...when I 1/2 throttle it...the boost is fine and hits about 10 psi and no problems...when I 3/4 or try to go WOT, the boost goes all over the place and the car goes herky-jerky until I let off the gas...
Now I checked all hoses and such and they are tight and secured...I know for certain the wastegate rod is the stock length...and I know there are no exhaust leaks...and the turbo is in great shape...and no I do not have a scan tool yet which is a no-no!
So here's my conclusion to this problem...I still have the stock fuel pump and regulator (70,000 miles), and I think when I try to punch it, I am severely leaning out and can't run the full boost because there is not enough fuel...everything else on the car is pretty much stock and in good working order...but I think the pump and regulator need to go
What are your guys' thoughts about this? am I right and will changing these two things clear up the boosting problems??? Thanks for any help.
------------------
http://www.angelfire.com/in4/d0n_3d/
1987 Buick Grand National - 70,000 miles, Stock engine: Poston chromed MAF pipe, homemade cold air induction system w/ 9" K&N air filter behind headlights, Poston 3" Downpipe with high-flow CAT and test pipe, 2.5" Hooker cat-back exhaust system, adjustable wastegate actuator set at 15 lbs of boost on 93 octane for now until fuel pump and regulator are upgraded (coming soon), K&N breather by-pass kit, ANS Performance 93 octane street/strip chip, throttle body coolant lines blocked, 160 degree thermostat, removed 1 screen from MAF sensor and removed intercooler screen, CR43TS spark plugs, BFG P255/60/R15 all-weather rear tires... first track times next spring=(
1995 Mercury Cougar XR7 - 87,000 miles, Stock 4.6L V8 Engine: dual exhaust out the rear, modified air-box with cold air induction, modified chip, adjustable fuel pressure regulator, P245/70/R16 all-weather rear tires; 14.9 @ 92mph
"Have U Been Beat...By A Grand National Lately?" <--many have been
Note to all Ford/Chevy/Import owners: BUICK OWNZ J00