Atp Testpipe/ Er Testpipe

[APRaudiA4]

Im looking to get either ATP testpipe or Evolution racewerks testpipe. Currently running APR stage 1+ with awe exhaust. I will be upgrading to GTRS within the next 6 months. Will the ER TP work for ko3 and GTRS? Will the ATP work for ko3 and GTRS? Which one is ultimately better?

[actlsub9]

Both test pipes work with either turbo.

[APRaudiA4]

Thanks

[jessefrank]

I beleive the ATP is 3" through out where as the ER is 3"-2.5". IMO It's better to have the transition from 3"-2.5" in the TP (although slightly closer to the turbo) so that it's not at a gasket/flange which could fail and it's a abrupt...the ER at least has some sort of taper down to the 2.5" dia. AWE has a 2.5" DP so I would go with the ER (and actually have/like the ER/AWE combo myself).

If you plan on getting a 3" DP at all in the future for your new BT setup then get the ATP so you can stay 3" to the Y in the AWE.

[APRaudiA4]

Thanks for the reply.
I plan on sticking with the awe exhuast for a while, even when I get my GTRS.

Few more questions tho....

-is the ATP manifold worth getting before I upgrade to stage 3?
-will i throw a code if im apr stage 1+ flashed w/ ER TP?
-what injectors should i run with the GTRS with revo file? (the 42lb ones on ecodes site for $199?)