Hi experts!
I am on the verge of replacing my exhaust system, and I'm thinking of getting a 2.25 Magnaflow cat-back system (the only one available here in Poland for my car).

Now, what really worries me is that by going to 2.25in, I'll lose my low end torque, which I desperately need as most of my driving is city stop&go.

Can anyone confirm this, or explain to me what effects I should be expecting if I install the dedicated system?

Perhaps I should have a shop made 2.00in system?

I also have an SRI and a DC Sports ceramic header, but no other mods.

 

no. you wont loose your low-end torque. if anything you'll gain it. not if you got a 2.5 or bigger, then yeah, you'd loose it. 2.25 is perfect for someone with just basic mods(intake and header).

 

So worst case scenario is I'll gain nothing in the low end, and gain in the mid to high?
Even with lower in-exhaust pressure?

I just want to make quadruple sure - these things here are bloody expensive...