So I recently had my car tuned after I installed the KB 2.8H. And car seems to cut out now when I slap the throttle or do WOT pulls.
If If decide to do a 25 or 40 or whatever roll race and WOT , It will cut out for a second, then Take off like nobodies business.
If I ease into the car till I hit WOT , No issues whatsoever.
If I shift gears and again WOT, It'll cut out again..
When it cuts out, I notice the fuel pressure drops drastically to about 24 or even less psi, then immideatly jumps back up to about 40 and so on....
It's bugging the shit out of me and I have pretty much ran out of leads...
Now the person who tuned it , in my eyes is very very trust worthy, He's tuned ALL my cars, my friends, etc, and has NEVER let us down, i called him, and he has been doing everything he can to try and help, He even adjusted my tune a bit to try and help it , and it DID help ALOT. But still does it occasionally.He said what he adjust was basically the fuel pressure side of it, He increased the PSI by 5 psi at all times.
Now, Together we went over what it might be, and he has basically concluded that the fuel pumps could be weak, and need to replace them with much better pumps...
I pulled the tank down a week ago to delete the PPRV when I was first having the issue and found the pumps haven't had the screens on for who knows how long, I'm sure over 4 or 5 years EASY....Screens were just floating around...
So my tuner is thinking the pumps might be worn out and weak from years of trash going through them, just can't keep up every time with the immideate demand in fuel, and do end up catching up milliseconds later.......
I also to be sure rechecked the gap in the TR6s to eliminate any thoughts of blowout as well , so all is good there.
So heres a Quick rundown on my car.
Built Motor (factory compression)
Kenne Bell 2.8H @17lbs(581whp/566wtq @ 20Dg of timing on Pump 93)
80lb Injectors
Series 1 Ford GT pumps
KB BAP
PPRV Delete
(Stock returnless system)
SCT3000
JLT CAI
Accufab SBTB
Cars has other bolts exhaust wise, and cooling wise , But the list I typed above is probley the only info really needed to help solve the issue.
So quick little details I did to try and improve the issue,
Regapped Spark plugs.
Replaced fuel filter
PPRV delete
Swapped FRP Sensor
Checked all fuel lines for damage
Checks all wiring EVERYWHERE!
Checked all vacuum lines
Checked fluids
Filled fuel tank
List goes on and on....
And again, It only cuts out for a split second, and ONLY cuts out with you do an immediate WOT in ANY gear, At ANY rpm...
(Could be in 5th gear cruising at 1800rpms and slap it open and it cuts out, then takes off!
Or I could be in 2nd doing a 25mph Roll race at 4000rpm and it cuts out, Then takes off)
It WILL NOT cut out if I ease into WOT though.
It'll pull like a train and will not cutout.
I would also like to add, on my previous setup, ported Eaton making 15lbs , made 481/516 and it NEVER cut out, or even came close, car ran normal then, and also did it on the same fuel setup I have now, except for the injectors, I then had stock 39lbers.
But obviously I now have a biggggger blower demanding more fuel, Making more power..
What's y'alls opinions on the issue ???? Any possible leads would be great!!!
If If decide to do a 25 or 40 or whatever roll race and WOT , It will cut out for a second, then Take off like nobodies business.
If I ease into the car till I hit WOT , No issues whatsoever.
If I shift gears and again WOT, It'll cut out again..
When it cuts out, I notice the fuel pressure drops drastically to about 24 or even less psi, then immideatly jumps back up to about 40 and so on....
It's bugging the shit out of me and I have pretty much ran out of leads...
Now the person who tuned it , in my eyes is very very trust worthy, He's tuned ALL my cars, my friends, etc, and has NEVER let us down, i called him, and he has been doing everything he can to try and help, He even adjusted my tune a bit to try and help it , and it DID help ALOT. But still does it occasionally.He said what he adjust was basically the fuel pressure side of it, He increased the PSI by 5 psi at all times.
Now, Together we went over what it might be, and he has basically concluded that the fuel pumps could be weak, and need to replace them with much better pumps...
I pulled the tank down a week ago to delete the PPRV when I was first having the issue and found the pumps haven't had the screens on for who knows how long, I'm sure over 4 or 5 years EASY....Screens were just floating around...
So my tuner is thinking the pumps might be worn out and weak from years of trash going through them, just can't keep up every time with the immideate demand in fuel, and do end up catching up milliseconds later.......
I also to be sure rechecked the gap in the TR6s to eliminate any thoughts of blowout as well , so all is good there.
So heres a Quick rundown on my car.
Built Motor (factory compression)
Kenne Bell 2.8H @17lbs(581whp/566wtq @ 20Dg of timing on Pump 93)
80lb Injectors
Series 1 Ford GT pumps
KB BAP
PPRV Delete
(Stock returnless system)
SCT3000
JLT CAI
Accufab SBTB
Cars has other bolts exhaust wise, and cooling wise , But the list I typed above is probley the only info really needed to help solve the issue.
So quick little details I did to try and improve the issue,
Regapped Spark plugs.
Replaced fuel filter
PPRV delete
Swapped FRP Sensor
Checked all fuel lines for damage
Checks all wiring EVERYWHERE!
Checked all vacuum lines
Checked fluids
Filled fuel tank
List goes on and on....
And again, It only cuts out for a split second, and ONLY cuts out with you do an immediate WOT in ANY gear, At ANY rpm...
(Could be in 5th gear cruising at 1800rpms and slap it open and it cuts out, then takes off!
Or I could be in 2nd doing a 25mph Roll race at 4000rpm and it cuts out, Then takes off)
It WILL NOT cut out if I ease into WOT though.
It'll pull like a train and will not cutout.
I would also like to add, on my previous setup, ported Eaton making 15lbs , made 481/516 and it NEVER cut out, or even came close, car ran normal then, and also did it on the same fuel setup I have now, except for the injectors, I then had stock 39lbers.
But obviously I now have a biggggger blower demanding more fuel, Making more power..
What's y'alls opinions on the issue ???? Any possible leads would be great!!!
