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hey if in order sport headers can u do that e mine please? July build delivery likely aug or sept
Originally Posted by TurboDogue
could
You pm me a quote on race headers and exhaust? Would a tune be mandatory in your mind or would the car run well just w install and stock tune? CEL concerns?
I can most certainly Laser Engrave them for you I'll shoot you over a PM now, and the car will typically run well but you will have a CEL from deleting the catalytic converters. That being said, you can send us your unique ECU datalog via a Cobb Accessport and we can turn off that CEL for it and provide you with a good deal more performance at the same time
dynoed my gt4 with and without fabspeed sport headers...
attached you will find the result.....
a little power increase 5 hp @7500 rpm... but a really good torque and power
increase @3600 and @5000 rpm....+13 hp and +25 nm circa
hope this helps....
ps power @ crank
below 2k and just above 4k, the stock headers seem to be better... is this basically just a tradeoff?
We have been offering these to go along with components that alter or eliminate catalytic converters, primarily for the Ferrari market as they are known to be very sensitive to exhaust modifications. We've been getting them into the hands of owners with as many different exhaust configurations as possible in an attempt to get extensive real world results. So far, so good; they are working great!
We know there are some owners who are looking to run Race Headers but are not willing to tune the ECU at this time. This could be a viable solution to prevent check engine lights on GT4's, but we need to do more testing before we can stand behind them with confidence. If anyone is interested in testing them, please let us know!
02-08-2016, 04:04 PM
I'll shoot you over a PM now, and the car will typically run well but you will have a CEL from deleting the catalytic converters. That being said, you can send us your unique ECU datalog via a Cobb Accessport and we can turn off that CEL for it and provide you with a good deal more performance at the same time 
