I am getting my car tuned.... WHAT SHOULD I LOOK FOR
I have been piecing my car together for a while, and was ready to get it tuned. I dropped the car off to Adam at DEVO Tuning. I have never been down this tuning road before, so I am just wondering if I am doing everything right. Devo is very capable of making this car run right/fast, I just need to make sure I communicate my expectations to him. I dont know how up to date my profile is so I will just mention my mods here.
evo GT manifold (from turbochargers.com)
Small 16G
EVO 3 02 Housing.
Homemade 3" Downpipe
3" Test Pipe
Thermal R&D Catback.
SAFC-II
walboro 255 lph
AMS 680 CC injectors
2G MAS
extreme intercoolers 7" fmic kit with 2.5 pipes, t-bolt clamps, couplers, etc.
kris144 intake pipe
Autometer Boost & EGT Gauge
MBC
polyurethane motor mounts
vacum line reduction
logger
QUESTION 1 :: THE AUTO ECU DILLEMA?
I have a '92 TSI AWD 5spd. When I bought my car the guy mentioned that he changed the ECU because the old one went bad. He said he replaced it with an automatic ECU, and that the car is probably running a little rich. Before I dropped my car off to get tuned, I tested this theory out ....
390 cc / 680 cc -1 = 43% (Injector Compensation for an AUTO ECU)
43% - 15% = 28% (Compensation for the 2G MAS)
So I set my off boost settings at 28%, I figured that if the car knocks its a manual ECU and if it doesn't than its a AUTO ECU. The car DID NOT knock at all. So i fgured this meant I was right on the ball.
I dropped off my car to get tuned and have some other things looked at, I looked at the low setting off-boost and they were all like 11% -13% etc? How can this be? I drove the car around felt great and the rpm band was way smoother than when I had orginally gave it to him. I started asking him about the A/F ratio and he said it was a conservative mid-11.
QUESTION 2 :: THE BOOST
When i called him he said that the boost was a little to high at 22 pounds so he turned it down to 18. I went to go see him and explained to him that I wanted to see 20+ on pump gas. He said that he has seen people run higher boost but it doesnt last very long. I asked him what he thinks is causing me to not go higher than 18, and he said its just pump gas. He said you can go higher on race gas, he even mentioned a figure of 25-26 pounds.
Is this true? I am looking for conservative results with reliable and repeatable results. But isn't 18 pounds on a small 16G a little too conservative? I took the car out after he had tuned and saw the boost gauge get up to 20lbs. Whether he set it to 18 pounds and it creeped to 20 or whatever, If its creeping to 20 I think it should be able to run it effeciently. Your thoughts?
Because their are two settings/MAPS/tunes on the SAFC-II I told him can I we use one for pump gas and the other for RACE GAS. He said "that with a MAF the more air it sees, the richer its gonna run, and thats something thats good." Basically he said the street tune that I have is suffiecient. Is this true? Should I ask him for a race gas tune? does it differ that much?
QUESTION 3 :: THE evo 3 O2 Housing
Clearly I didn't do enough research on this part BEFORE I bought it. When I put it on, the downpipe began to hit the transfercase. I brought this up to the tuner, and he said that he moved it out of the way a little. i told him what happens if the exhaust starts to heat up the transfercase, burns the oil inside the case, and it locks up? Is this a possibility? He said no, its not that serious. Your thoughts?
more questions as I remember them.
I have been piecing my car together for a while, and was ready to get it tuned. I dropped the car off to Adam at DEVO Tuning. I have never been down this tuning road before, so I am just wondering if I am doing everything right. Devo is very capable of making this car run right/fast, I just need to make sure I communicate my expectations to him. I dont know how up to date my profile is so I will just mention my mods here.
evo GT manifold (from turbochargers.com)
Small 16G
EVO 3 02 Housing.
Homemade 3" Downpipe
3" Test Pipe
Thermal R&D Catback.
SAFC-II
walboro 255 lph
AMS 680 CC injectors
2G MAS
extreme intercoolers 7" fmic kit with 2.5 pipes, t-bolt clamps, couplers, etc.
kris144 intake pipe
Autometer Boost & EGT Gauge
MBC
polyurethane motor mounts
vacum line reduction
logger
QUESTION 1 :: THE AUTO ECU DILLEMA?
I have a '92 TSI AWD 5spd. When I bought my car the guy mentioned that he changed the ECU because the old one went bad. He said he replaced it with an automatic ECU, and that the car is probably running a little rich. Before I dropped my car off to get tuned, I tested this theory out ....
390 cc / 680 cc -1 = 43% (Injector Compensation for an AUTO ECU)
43% - 15% = 28% (Compensation for the 2G MAS)
So I set my off boost settings at 28%, I figured that if the car knocks its a manual ECU and if it doesn't than its a AUTO ECU. The car DID NOT knock at all. So i fgured this meant I was right on the ball.
I dropped off my car to get tuned and have some other things looked at, I looked at the low setting off-boost and they were all like 11% -13% etc? How can this be? I drove the car around felt great and the rpm band was way smoother than when I had orginally gave it to him. I started asking him about the A/F ratio and he said it was a conservative mid-11.
QUESTION 2 :: THE BOOST
When i called him he said that the boost was a little to high at 22 pounds so he turned it down to 18. I went to go see him and explained to him that I wanted to see 20+ on pump gas. He said that he has seen people run higher boost but it doesnt last very long. I asked him what he thinks is causing me to not go higher than 18, and he said its just pump gas. He said you can go higher on race gas, he even mentioned a figure of 25-26 pounds.
Is this true? I am looking for conservative results with reliable and repeatable results. But isn't 18 pounds on a small 16G a little too conservative? I took the car out after he had tuned and saw the boost gauge get up to 20lbs. Whether he set it to 18 pounds and it creeped to 20 or whatever, If its creeping to 20 I think it should be able to run it effeciently. Your thoughts?
Because their are two settings/MAPS/tunes on the SAFC-II I told him can I we use one for pump gas and the other for RACE GAS. He said "that with a MAF the more air it sees, the richer its gonna run, and thats something thats good." Basically he said the street tune that I have is suffiecient. Is this true? Should I ask him for a race gas tune? does it differ that much?
QUESTION 3 :: THE evo 3 O2 Housing
Clearly I didn't do enough research on this part BEFORE I bought it. When I put it on, the downpipe began to hit the transfercase. I brought this up to the tuner, and he said that he moved it out of the way a little. i told him what happens if the exhaust starts to heat up the transfercase, burns the oil inside the case, and it locks up? Is this a possibility? He said no, its not that serious. Your thoughts?
more questions as I remember them.