James-GMG

Well it's great when one of your dealers helps co-promote the effectiveness of your products and takes the time to dyno, before and after, the GMG side muffler deletes and rear center section.

This was done at TopSpeed Motorsports and the results are impressive. If you want to lose weight and gain HP/Torque, this is a great combo. The sound enhancement is icing in the cake as our unit is not only known for superior build quality but the pitch of the exhaust is one of a deep growl under initial throttle and then quickly rising to an incredible high rpm pitch that rivals its Cup car cousins!

hughp3

Nice numbers. TopSpeed is a good shop.

Nein11RS

Nice! Is this just bolt on or was any ecu tuning done?

Nizer

What is this exactly? Side muffler delete with a replacement center muffler or side and center muffler delete? If replacement center muffler is it valved like TPC side muffler delete system? Assuming this is Gen1 991 RS system?

Photos would help. Thanks.

SANDIEGO

Looks good. I have BBI center section and the sound is great but has no increase in power.

I have four questions
1) Would i simply have to delete the side mufflers to match this set up?
2) How much louder would it be than just the center section delete?
3) Would this void one's warranty.
4) Would this trigger a CEL or was a tune needed?

meaker

2 year old thread...

Nein11RS

@sandiego, with respect to question 3, although this subject is much debated throughout the known interwebs there does exist a law for this issue...personally, I will likely wait until my warranty expires BEFORE changing anything like the exhaust or modifying the ecu, however, should you choose to modify the car a manufacturer cannot simply blame the aftermarket part without proof as grounds for denying a warranty claim.

https://en.wikipedia.org/wiki/Magnus...s_Warranty_Act

Brosef

I'm more curious what the before and after dyno looks like with your headers with hi-flow cats.