Hi, I am new to the forum as well as turbo Buicks and have a few questions.
First I have a 1987 GN with 52k miles The car was my dads and he is no longer around to ask questions about the setup. From what I can gather this is the current setup.
TA-49 Turbo
Lucas 42.5# injectors
Fuel pump unknown, I know it is hotwired, I have a racetronix 255 ready to go in to replace it as the pump in it is making noise.
Caspers Electronics TPS-Tec
Aftermarket FPR, Was a custom made one back in the 90s by a good friend of his its a billet unit, its operating correctly 43pis and rising 1:1
Delco CR43TS , Kirban Grey Spark plug wires Ranging from 500Ohm-700Ohm (Brand new - 2 weeks old)
Gutted catalytic converter and high flow Cutback exhaust
PTE 93 Octane Street chip 20* timing
My big question here is at 18PSI of boost I am still seeing about 3-4 Degrees of Knock Retard so it was turned down to 14Psi to be extra safe, but I still see about 1-3 degrees of knock retard here and there. I most often see 1-2 degrees when I let off the throttle and there is no Knock retard when I am WOT. I was assuming the 20 degrees of timing on the chip is just slightly too high for todays modern 93 pump gas. So as a response to this I ordered a 5.7 TT chip and was going to set the boost to 16# for a happy 93 pump gas setup. Assuming Eric at TT would probably set the timing to 18/17. Does anything seem blatantly wrong with this mindset in logic ? I did a lot of research here and I hope I am on the right track.
The goal for this car is a low 13s 93 Pump gas car, that can be car cruised and driven without having to deal with alk or race gas. (Maybe ALK in the future but I will probably save that for my second buick)
First I have a 1987 GN with 52k miles The car was my dads and he is no longer around to ask questions about the setup. From what I can gather this is the current setup.
TA-49 Turbo
Lucas 42.5# injectors
Fuel pump unknown, I know it is hotwired, I have a racetronix 255 ready to go in to replace it as the pump in it is making noise.
Caspers Electronics TPS-Tec
Aftermarket FPR, Was a custom made one back in the 90s by a good friend of his its a billet unit, its operating correctly 43pis and rising 1:1
Delco CR43TS , Kirban Grey Spark plug wires Ranging from 500Ohm-700Ohm (Brand new - 2 weeks old)
Gutted catalytic converter and high flow Cutback exhaust
PTE 93 Octane Street chip 20* timing
My big question here is at 18PSI of boost I am still seeing about 3-4 Degrees of Knock Retard so it was turned down to 14Psi to be extra safe, but I still see about 1-3 degrees of knock retard here and there. I most often see 1-2 degrees when I let off the throttle and there is no Knock retard when I am WOT. I was assuming the 20 degrees of timing on the chip is just slightly too high for todays modern 93 pump gas. So as a response to this I ordered a 5.7 TT chip and was going to set the boost to 16# for a happy 93 pump gas setup. Assuming Eric at TT would probably set the timing to 18/17. Does anything seem blatantly wrong with this mindset in logic ? I did a lot of research here and I hope I am on the right track.
The goal for this car is a low 13s 93 Pump gas car, that can be car cruised and driven without having to deal with alk or race gas. (Maybe ALK in the future but I will probably save that for my second buick)