Turbo Back Exhaust System-Do I Need A Nistune Etc?

[theboosh]

Hi,

Just after some advice regarding whether a tune is required after installing a turbo back exhaust. I've got a stock R33 GTST, and have been looking at something like the CES turbo back complete system.

They've advised that will give a gain of 30-40kw ATW, without any tune.

I'm not planning on changing the stock boost controller or doing any other mods, but what I'm wondering is whether the increased flow from a complete new exhaust system is enough to throw the air/fuel ratios out and cause the rich/retard issue I've read about...or does this only occur if you start upping the boost as well?

I'm not too worried about making the maximum possible power, more whether the car is going to be running poorly after and I should be adding on the cost of a Nistune or similar setup to changing out the exhaust system.

Cheers

[Ben C34]

Exhaust on its own is fine. It will benefit from nistune but not required.

Edited July 16, 2014 by Ben C34

[re34perGTT]

If you increase the size of all the pipes would the O2 sensor at the dump pipe get weird readings and cause the stock ecu to play up? That's what I've read on one of these forums, is that true ?

[scotty nm35]

If you increase the size of all the pipes would the O2 sensor at the dump pipe get weird readings and cause the stock ecu to play up? That's what I've read on one of these forums, is that true ?

No. Not unless there is a leak.