My car is crazy any suggestions on how to tune or fix it?
07-07-07, 11:25 AM
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Location: knoxville TN
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My car is crazy any suggestions on how to tune or fix it?
For the first ten min or so my car bogs down around 6000rpm. After that around 3000-4500rpm depending on how long the car has been running my car bogs down more and more after around 40-50 min of driving its hard for me to get it past 2000rpm. The water timp stays around 88 to 90c and my AT never goes above 55c stays around 30-35c normaly. My Microtech says it is going way lean but my o2 sensor is not wide band so who really knows.
I was wondering if it is because I upgraded my secondary injectors to 800cc or if it were something else.
The longer I drive it the sooner it bogs down.
My turbo spools up very quickly because of my 3" intake inducts and my racing beat exhaust. I did not know if I just wasn't getting enough fuel while spooling in low rpms and then being at full boost when it is around 2500-3000rpm. Maybe that boost response is normal but it was better than I expected.
This is the first time I have been driving the car it has taking me 6 months but I bought a broken 87tII rx7 and did a 89-91 jmd turbo engine swap. Never really worked on cars but I think it came out all right.
I don’t know what all info is needed so I will give you a list of my mods.
Stock turbo 5-6psi
premix 128:1
biltz bov
removed air pump and power steering pump
made a 3" pvc induct & purchesed a apexi cone filter removed afm
walbro 255 fuel pump
800cc secondaries
raceing beat exaust
micrtech Ecu 4x ignition
msd ss coils
rewired fuel pump
have a FMIC but not installed yet trying to learn to tig weld
basic tune up
new platnum nkg plugs, msd wires, fuel filter,
oil and filter change, flushed rad, new o2 sensor.
I have been reading everything I can get my hands on about the car and that is what has got me this far. But tuning this microtech is very complicated.
what should I do first lean it out or make it richer? Should I use matrix mode or normal mode?
Any help suggestions or constructive criticism would be wonderful. I do know that a Microtech specialist should tune the car but I have spent all my savings and every paycheck for the last six months trying to get this car going but I cant afford to pay anyone to tune it for me as of now. I did not know it would take this long or cost this much but this is my only car and I need to be able to drive. so if I can get some help getting it tuned to a safe drivable level it would be greatly appreciated.
I was wondering if it is because I upgraded my secondary injectors to 800cc or if it were something else.
The longer I drive it the sooner it bogs down.
My turbo spools up very quickly because of my 3" intake inducts and my racing beat exhaust. I did not know if I just wasn't getting enough fuel while spooling in low rpms and then being at full boost when it is around 2500-3000rpm. Maybe that boost response is normal but it was better than I expected.
This is the first time I have been driving the car it has taking me 6 months but I bought a broken 87tII rx7 and did a 89-91 jmd turbo engine swap. Never really worked on cars but I think it came out all right.
I don’t know what all info is needed so I will give you a list of my mods.
Stock turbo 5-6psi
premix 128:1
biltz bov
removed air pump and power steering pump
made a 3" pvc induct & purchesed a apexi cone filter removed afm
walbro 255 fuel pump
800cc secondaries
raceing beat exaust
micrtech Ecu 4x ignition
msd ss coils
rewired fuel pump
have a FMIC but not installed yet trying to learn to tig weld
basic tune up
new platnum nkg plugs, msd wires, fuel filter,
oil and filter change, flushed rad, new o2 sensor.
I have been reading everything I can get my hands on about the car and that is what has got me this far. But tuning this microtech is very complicated.
what should I do first lean it out or make it richer? Should I use matrix mode or normal mode?
Any help suggestions or constructive criticism would be wonderful. I do know that a Microtech specialist should tune the car but I have spent all my savings and every paycheck for the last six months trying to get this car going but I cant afford to pay anyone to tune it for me as of now. I did not know it would take this long or cost this much but this is my only car and I need to be able to drive. so if I can get some help getting it tuned to a safe drivable level it would be greatly appreciated.
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