Can someone answer a question about boost please!!
08-14-12, 05:56 PM
#1
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Can someone answer a question about boost please!!
I have a totally built Pettit racing motor that only has about 1000 miles on it. I have a full exhuast, single turbo, FC commander, upgraded fuel pump and injectors, big intercooler, bov, and bigger radiator. I am looking for info on just how high I can SAFELY set my boost. I am currently at about 11psi or so and would like to take it to at least 15psi. Pettit for some reason highly recommended not even putting a single turbo on one of their motors, and they said turn the boost way down. Well that of course equates to less horsepower. So can someone who knows what they are talking about PLEASE give me some advice?? How high can I safely go?? Thanks in advance!
08-14-12, 06:04 PM
#2
silver ghost
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Pettit racing doesnt have much experience in the single turbo game. They focus on the twins and related modifications to that platform. You need to be more specific on the turbo size and fuel upgrades to get a better answer as to boost levels. Keep it @ 11 until you provide more info. G
08-14-12, 07:03 PM
#3
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Pettit racing doesnt have much experience in the single turbo game. They focus on the twins and related modifications to that platform. You need to be more specific on the turbo size and fuel upgrades to get a better answer as to boost levels. Keep it @ 11 until you provide more info. G
08-15-12, 05:25 PM
#4
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Pettit racing doesnt have much experience in the single turbo game. They focus on the twins and related modifications to that platform. You need to be more specific on the turbo size and fuel upgrades to get a better answer as to boost levels. Keep it @ 11 until you provide more info. G
08-15-12, 05:27 PM
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Ok, the Turbo is a Greddy and it says T39 33-D I am going to attach a few photos of the engine compartment and specifically the fuel rail. I really don't know what kind of fuel pump or injectors but I am sure that they are upgraded to a level that will work wll with the Turbo. Thanks!
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08-15-12, 08:20 PM
#12
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Pettit racing doesnt have much experience in the single turbo game. They focus on the twins and related modifications to that platform. You need to be more specific on the turbo size and fuel upgrades to get a better answer as to boost levels. Keep it @ 11 until you provide more info. G
08-15-12, 08:22 PM
#14
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I found out some info on my upgrades. The turbo is a Greddy T78, Competition Nipendenso fuel pump, primary injectors are stock and the secondaries are Bosch 1600cc's, big intercooler, cold air kit, free flowing exhaust. Your opinion on the boost would be appreciated, I would really like to put it up to 15psi, but I would really like to be safe! Thanks!
08-15-12, 10:06 PM
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08-15-12, 11:57 PM
#18
16-17 PSi is perfectly fine on pump gas 93/94 IF it is tuned correctly. With water or water/meth injection, you can go even further. The final say should be up to your tuner. Pettit probably isn't confident in your particular setup and is probably the reason for such advice. Have a talk with them to find out why. At high boost, everything needs to be running properly and efficiently.
That is bullshit, if the car was not tuned at 15 psi, it should not be run at 15 psi. Are they going to take responsibility for their opinion if something happens?
thewird
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08-16-12, 06:44 AM
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08-16-12, 01:57 PM
#20
rat ta tat tat
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Why doesn't Pettit want you to turn it up???You should know that as boost rises, generally, relibilty decresses. I think this is why they say that
If you don't know how to tune the car properly, don't mess with it until you learn more or take it to some one who does. Your injectors, ic and turbo can handle it, but the tuning needs to be spot on. Doesn't take much to damage stock seals
If you don't know how to tune the car properly, don't mess with it until you learn more or take it to some one who does. Your injectors, ic and turbo can handle it, but the tuning needs to be spot on. Doesn't take much to damage stock seals
08-16-12, 03:43 PM
#21
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Why doesn't Pettit want you to turn it up???You should know that as boost rises, generally, relibilty decresses. I think this is why they say that
If you don't know how to tune the car properly, don't mess with it until you learn more or take it to some one who does. Your injectors, ic and turbo can handle it, but the tuning needs to be spot on. Doesn't take much to damage stock seals
If you don't know how to tune the car properly, don't mess with it until you learn more or take it to some one who does. Your injectors, ic and turbo can handle it, but the tuning needs to be spot on. Doesn't take much to damage stock seals
08-16-12, 06:33 PM
#23
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Yes, done right it can work, but make one mistake setting it up get some knock, chip a corner off an apex seal, kill a housing and rotor. I think pettit uses stock seals in all their builds, they allow no room for mistakes at the power level. If I were you I would look into Auxilary Injection and find a reliable tuner. A 450rwhp fd is a blast to drive...
08-16-12, 09:39 PM
#24
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16-17 PSi is perfectly fine on pump gas 93/94 IF it is tuned correctly. With water or water/meth injection, you can go even further. The final say should be up to your tuner. Pettit probably isn't confident in your particular setup and is probably the reason for such advice. Have a talk with them to find out why. At high boost, everything needs to be running properly and efficiently.
That is bullshit, if the car was not tuned at 15 psi, it should not be run at 15 psi. Are they going to take responsibility for their opinion if something happens?
thewird
That is bullshit, if the car was not tuned at 15 psi, it should not be run at 15 psi. Are they going to take responsibility for their opinion if something happens?
thewird
Are you running any kind of water/meth inj. now ??
08-16-12, 11:07 PM
#25
Yes, done right it can work, but make one mistake setting it up get some knock, chip a corner off an apex seal, kill a housing and rotor. I think pettit uses stock seals in all their builds, they allow no room for mistakes at the power level. If I were you I would look into Auxilary Injection and find a reliable tuner. A 450rwhp fd is a blast to drive...
I'm not saying, the aftermarket seals aren't better, I'm saying they are not as fragile as some people make them out to be. If a motor detonates or runs too hot (tuning), its going to break or warp whatever you have in there, period.
thewird