89 NA to turbo swap no high rpm
08-02-10, 07:54 PM
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89 NA to turbo swap no high rpm
I have swapped a Turbo into a 89. Change engine,tranny,ecu,fuel pump,maf,sensor
Idles great revs up great. When I drive it 1st gear pulls good and runs great but when go to 2nd and up it sputtters like bad plugs and then even when I go to1st again runs like crap. If I shut it off the whole process starts over again. I checked for ecu codes but none a present. Any suggestions would be greatly appreciated.
Idles great revs up great. When I drive it 1st gear pulls good and runs great but when go to 2nd and up it sputtters like bad plugs and then even when I go to1st again runs like crap. If I shut it off the whole process starts over again. I checked for ecu codes but none a present. Any suggestions would be greatly appreciated.
08-03-10, 01:19 PM
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In 1st gear I build up to 8lbs then when I shift to 2nd it starts to build boost (a lb or two) then it shuts down and starts to sputter. I do have a blow off on it but I don't think that matters.
08-03-10, 05:05 PM
#6
Boost pressure is limited by the wastegate. Stock wastegates don't flow all that well, and free-flowing exhausts/intakes can lead to boost creep. http://fc3spro.com/TECH/HOWTO/KWG/kwg.html
But if you're only building 1-2 psi total before it sputters, that wouldn't be fuel cut. If you're building 1-2 psi more than in 1st gear, I would say it is fuel cut.
Are you getting any trouble codes (check engine light)? http://www.johnr.com/cpucodes.html
But if you're only building 1-2 psi total before it sputters, that wouldn't be fuel cut. If you're building 1-2 psi more than in 1st gear, I would say it is fuel cut.
Are you getting any trouble codes (check engine light)? http://www.johnr.com/cpucodes.html
08-03-10, 06:27 PM
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It does sound like fuel cut due to high boost. I didn't know it had a 8.6 limit. I really appreciate all the help and suggestions. I won't be able to try it for a couple of weeks but I will post the outcome. Thanks again
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