STS turbos
Thread Starter
Heel & Toe
Joined: Apr 2009
Posts: 16
Likes: 0
STS turbos
I purchased a 2001 corvette with twin sts turbos, i have been trying to get it running right as the previous owner did not do anything after installing the turbos. I have replaced the injectors and fuel pump, I was told to replace the MAF to a z-06 MAF, anyone know which one I need to get and where the best price is.
Thank you for your help
Leroy
228-327-0151
Thank you for your help
Leroy
228-327-0151
Instructor
Joined: Oct 2009
Posts: 215
Likes: 1
From: Roseville CA
More than likely if you are not running more boost than the base sts kit advertises than you do not need a new MAF. What you really need to do is get the vehicle to a tuner and let them run some scans. Sounds like the previous owner may have installed a tuner version of the sts kit where you need to supply your own fuel upgrades, ie injectors, fuel pump, boost a pump, and the tune. A tuner can definitely tell you what the problem is.
Tech Contributor
Joined: Aug 2008
Posts: 2,902
Likes: 21
From: Oak Hill Virginia
More than likely if you are not running more boost than the base sts kit advertises than you do not need a new MAF. What you really need to do is get the vehicle to a tuner and let them run some scans. Sounds like the previous owner may have installed a tuner version of the sts kit where you need to supply your own fuel upgrades, ie injectors, fuel pump, boost a pump, and the tune. A tuner can definitely tell you what the problem is.
I'm pretty sure the 01 MAF and the Z06 MAF are the same size; the only difference is that the Z06 MAF doesn't have a screen on it...
What do you mean when you say he installed the turbos and didn't do anything else? Did he install any of the fuel system upgrades, gauges, valvetrain upgrades etc.? Did he have it tuned by someone? I'm not sure why someone would just slap a $7K turbo kit on a car and sell it before finishing the cheap stuff so I just want to make sure I understand what you're saying...
Thread Starter
Heel & Toe
Joined: Apr 2009
Posts: 16
Likes: 0
the original installer or owner did not upgrade injectors, fuel pump, and i have had it to a tuner, he is the one that told me to upgrade these things, including the MAF, i just havent been able to get in touch with him to find out about the MAF, i have upgraded everything else, there were all sorts of problems with the turbos when i purchased this car, including blowing oil out of exhaust, oil leak in front connectors, clutch sticks to floor when turbos kick in at high rpms (still havent fixed this one), injectors, fuel pump, no fuel pressure gauge, so yes, it does seem someone just stuck a 7k turbo system on a car without doing the cheep stuff
Burning Brakes
Joined: Sep 2011
Posts: 764
Likes: 19
From: odessa FL
The oil in the exhaust is probably the crappy STS pump failing to scavange, a common problem. I used a turbowerx pump mounted in the rear.
The clutch issue is probably unrelated to the turbos. Line issue?
Not sure the MAF is needed or much of an upgrade.
The stock kits use 40# injectors. Consider a FP gauge a must.
Do yourself a favor and don't try to drive it under boost until you get the AFR right, or things will really get expensive.
The clutch issue is probably unrelated to the turbos. Line issue?
Not sure the MAF is needed or much of an upgrade.
The stock kits use 40# injectors. Consider a FP gauge a must.
Do yourself a favor and don't try to drive it under boost until you get the AFR right, or things will really get expensive.
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Burning Brakes
Joined: Apr 2005
Posts: 834
Likes: 0
From: Palm Beach Gardens FL
The oil in the exhaust is probably the crappy STS pump failing to scavange, a common problem. I used a turbowerx pump mounted in the rear.
The clutch issue is probably unrelated to the turbos. Line issue?
Not sure the MAF is needed or much of an upgrade.
The stock kits use 40# injectors. Consider a FP gauge a must.
Do yourself a favor and don't try to drive it under boost until you get the AFR right, or things will really get expensive.
The clutch issue is probably unrelated to the turbos. Line issue?
Not sure the MAF is needed or much of an upgrade.
The stock kits use 40# injectors. Consider a FP gauge a must.
Do yourself a favor and don't try to drive it under boost until you get the AFR right, or things will really get expensive.
Thread Starter
Heel & Toe
Joined: Apr 2009
Posts: 16
Likes: 0
The oil in the exhaust is probably the crappy STS pump failing to scavange, a common problem. I used a turbowerx pump mounted in the rear.
The clutch issue is probably unrelated to the turbos. Line issue?
Not sure the MAF is needed or much of an upgrade.
The stock kits use 40# injectors. Consider a FP gauge a must.
Do yourself a favor and don't try to drive it under boost until you get the AFR right, or things will really get expensive.
The clutch issue is probably unrelated to the turbos. Line issue?
Not sure the MAF is needed or much of an upgrade.
The stock kits use 40# injectors. Consider a FP gauge a must.
Do yourself a favor and don't try to drive it under boost until you get the AFR right, or things will really get expensive.
Thread Starter
Heel & Toe
Joined: Apr 2009
Posts: 16
Likes: 0
Agreed, My injectors are 42# neon green ones tho. My tuner said my 97 MAF with external IAT could be upgraded to the Z06 one, not sure which one your tuner is refering to if you already have the Z. Stock kit should be borderline ok with stock fuel system. If you changed the injectors after seeing your tuner then he will need to tune for them or your car will be way off. Like previous post don't get in the boost until you get this resolved or you run the risk of a blown motor.
Burning Brakes
Joined: Apr 2005
Posts: 834
Likes: 0
From: Palm Beach Gardens FL
From google: In 2001, GM changed the format of the mass air flow meters on C5 Corvettes. In previous years, the MAF (Mass Air Flow) meter and IAT (Intake Air Temperature) sensor were 2 separate pieces, both having their own wiring connector. The 2001 setup combines the MAF and IAT into one unit and rather than having 2 wiring connectors, there is one 5 pin setup. It is a cleaner and simpler setup and the parts to convert to the new style are cheap and readily available.
When referring to the Z I just meant the 2001 and up MAF. Sounds like you already have this one. Regarding the injectors if you changed them upon the request of your tuner I'm assuming he did not do anything that day. If you switched them and have not gotten the new time your car will not perform right. The bigger injectors will supply extra fuel which the computer won't know how to handle. My drivers side turbo has 1 or 2 drops of oil every once in awhile, but if it is spitting/pouring oil then you might have a bad turbo seal.
When referring to the Z I just meant the 2001 and up MAF. Sounds like you already have this one. Regarding the injectors if you changed them upon the request of your tuner I'm assuming he did not do anything that day. If you switched them and have not gotten the new time your car will not perform right. The bigger injectors will supply extra fuel which the computer won't know how to handle. My drivers side turbo has 1 or 2 drops of oil every once in awhile, but if it is spitting/pouring oil then you might have a bad turbo seal.
Thread Starter
Heel & Toe
Joined: Apr 2009
Posts: 16
Likes: 0
From google: In 2001, GM changed the format of the mass air flow meters on C5 Corvettes. In previous years, the MAF (Mass Air Flow) meter and IAT (Intake Air Temperature) sensor were 2 separate pieces, both having their own wiring connector. The 2001 setup combines the MAF and IAT into one unit and rather than having 2 wiring connectors, there is one 5 pin setup. It is a cleaner and simpler setup and the parts to convert to the new style are cheap and readily available.
When referring to the Z I just meant the 2001 and up MAF. Sounds like you already have this one. Regarding the injectors if you changed them upon the request of your tuner I'm assuming he did not do anything that day. If you switched them and have not gotten the new time your car will not perform right. The bigger injectors will supply extra fuel which the computer won't know how to handle. My drivers side turbo has 1 or 2 drops of oil every once in awhile, but if it is spitting/pouring oil then you might have a bad turbo seal.
When referring to the Z I just meant the 2001 and up MAF. Sounds like you already have this one. Regarding the injectors if you changed them upon the request of your tuner I'm assuming he did not do anything that day. If you switched them and have not gotten the new time your car will not perform right. The bigger injectors will supply extra fuel which the computer won't know how to handle. My drivers side turbo has 1 or 2 drops of oil every once in awhile, but if it is spitting/pouring oil then you might have a bad turbo seal.
