I recently had the chance to purchase the Top Speed Pro 1 Exhaust, and I must admitt the sound of it is great, however for some reason I feel like that I have lost some power instead of a gain. I have not had a chance to dyno my g35, howevert the take off on the car seems slow, and I feel that unless I hit 80 to 90 miles per hour I dont feel any difference. I have been told several different things regarding upgrading the computer system, maybe getting a chip. Can someone let me know if you have had a similar problem?

Thanks for the input

 

Is the exhaust 3 inch? I'm pretty sure thats all they make anymore...

 

Yeah I have he topspeed exhaust too, and I feel like it slowed down after i installed it too.. Sounds great, but I think there is a loss of power... i have the 2.5" piping version. Let me know if you have it dynoed. I wanna see what it produces (or loses)

 

Some more info about both of your cars would help with responses

 

Actually specs and/or pics of each setup would help the most iMHO

 

Listen to that guy, can't remember how many times I searched and read your posts Jeff, always answered a lot of questions and stuff lol

 

Yeah I have he topspeed exhaust too, and I feel like it slowed down after i installed it too.. Sounds great, but I think there is a loss of power... i have the 2.5" piping version. Let me know if you have it dynoed. I wanna see what it produces (or loses)

So I have done some research, or at least I have tried. I have gotten several answers, and I am not sure which one to go with however I am sure I will figure it out sooner or later. I went ahead and called Top Speed (972)233-0888 and they pretty much stated that I may have earned some hp in the front but lost some in the rear. Then I was told, that I may have to reset the ECU due to the fact that I have configured the hp to the car, and the third part I was told is that I would need to add the headers in order to get what I really wanted out of it. From my point of view, I can certainly see that the I am shifting at higher rpm's, and that I really do not feel anything unless I hit 80 to 90 miles per hour. I live in Miami and so far I have not found any places that really do the dyno, however some places in West Palm are suppose to. Anyhow, anyone that has experienced similar please reply and let me know how to fix my problem,

Thanks fellas

 

If there is no H or X pipe, you will lose low end most likely

 

Yea I seen that happen too I think you need I do a re flash (cheap way) or ecu upgrade
My friend had the greedy tic and it slowed his down but after an spacer and utech he said it ran fine , oh by the way he had headers all ready ... I don know if his helps out r not but I think you loss back pressure so ....