Drove Home With One Rotor
Senior Member
Joined: Oct 2001
Posts: 10,906
From: Peoria, AZ
Originally Posted by FikseRxSeven' date='Feb 17 2004, 07:12 PM
mazda reman engine 30k miles, full exhaust, intake, manual boost controller.
pettit unlimitted ecu, 12lbs of boost
the engine blew at 4000rpm on 2nd gear (i doubt that i over boosted)and i had brand new plugs (10mins old) wires were wired correctly .
i have a feeling that my coils went bad, i have been getting a very rough idle the past couple of days, and first thought it was the plug wires, so i replaced those, car was running good for a few mins but then back to the same crappy idle, then i replaced the plugs.... the car was then running perfectly for the next 5 mins.... for the warmup... then i stepped on it to see if its back to its old pretty fast self............................................
KABOOM!!!!! the HUGEST flame came out of my tailpipe, my rear view mirror all i could see was fire(no black in the sky, couldnt even see the car behind me)
pettit unlimitted ecu, 12lbs of boost
the engine blew at 4000rpm on 2nd gear (i doubt that i over boosted)and i had brand new plugs (10mins old) wires were wired correctly .
i have a feeling that my coils went bad, i have been getting a very rough idle the past couple of days, and first thought it was the plug wires, so i replaced those, car was running good for a few mins but then back to the same crappy idle, then i replaced the plugs.... the car was then running perfectly for the next 5 mins.... for the warmup... then i stepped on it to see if its back to its old pretty fast self............................................
KABOOM!!!!! the HUGEST flame came out of my tailpipe, my rear view mirror all i could see was fire(no black in the sky, couldnt even see the car behind me)
I don't understand..
The motor was probably weakened over time from running lean.
Thread Starter
Senior Member
Joined: Jan 2003
Posts: 8,079
From: union, new jersey
well i thought pettit ecu was supposed to take care of the fuel......
just took the boost gauge off cuz someone wanted to buy it, i have a new one, where its not very useful..... on the passenger seat of my car
it was probably weak..... oh well, now its dead.... and yeah..... its dead
just took the boost gauge off cuz someone wanted to buy it, i have a new one, where its not very useful..... on the passenger seat of my car
it was probably weak..... oh well, now its dead.... and yeah..... its dead
Senior Member
Joined: Oct 2002
Posts: 276
From: St. Louis
well i have a friend who has run 12-13psi on a pettit unlimited for 7 years and hes tracked it many times with no problems.....so i wouldnt blame the computer. Any other factors besides the coils? faulty injector?
Senior Member
Joined: Oct 2002
Posts: 276
From: St. Louis
Originally Posted by rfreeman27' date='Feb 17 2004, 07:44 PM
So the pettit might be tuned to 14.7, but it is a different story if you have the fuel to reach that boost safely.
Senior Member
Joined: Dec 2002
Posts: 4,107
From: fredneck MD
Originally Posted by boostdfd3s' date='Feb 17 2004, 11:47 PM
yeah but its tuned for the stock fuel system, so the only reason you wouldnt have the fuel would be a faulty part (bad injector, sticking pump, etc)
A fuel pump would be a minimum.
