[ecko04]

I went with the GM CAI since it comes with its own GM approved calibration.

Although I have the NPP, I wanted to add a bit more sound. I initially ordered headers, high flow cats and mid pipes but realized all of that would require a tune, and I did not want to void my warranty (or extended warranty) so I didn’t go through with the install and returned it all. I went with electric cutouts instead to get that sound I wanted, welded in right before the muffler so no issues with running lean, no tuning needed, no modification to any of the emissions controls.

I open them up using a remote when I want to go from mild 2 wild. I close them with the 3rd button on the garage door opener (using the 1st and 2nd buttons for actual garages). Anyone who says the NPP is basically a straight pipe when it’s in track mode, has never heard the car with the muffler bypassed...it’s a totally different beast.


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[Driski]

Originally Posted by ecko04

I went with the GM CAI since it comes with its own GM approved calibration.

Although I have the NPP, I wanted to add a bit more sound. I initially ordered headers, high flow cats and mid pipes but realized all of that would require a tune, and I did not want to void my warranty (or extended warranty) so I didn’t go through with the install and returned it all. I went with electric cutouts instead to get that sound I wanted, welded in right before the muffler so no issues with running lean, no tuning needed, no modification to any of the emissions controls.

I open them up using a remote when I want to go from mild 2 wild. I close them with the 3rd button on the garage door opener (using the 1st and 2nd buttons for actual garages). Anyone who says the NPP is basically a straight pipe when it’s in track mode, has never heard the car with the muffler bypassed...it’s a totally different beast.


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That sounds awesome. I would love to do that. Do you have a sound/video clip of this.

[Driski]

This is not really a bolt on but, I use the Range AFM delete. Car is much more fun to drive without the AFM crap.

[Driski]

Originally Posted by PRAY

Send the K&N back and get the Roto-fab Dry. As far as all the testing I have done it is the only one that maintains the MAF transfer function. You can also do my ported IM/TB, and cat back. An U/D is had to remove and easily spotable at the dealership. I have seen gains in the 25rw range with the above minus the cat back. If you have NPP the cat back is a bit of a waste of time unless it is a sound issue. Headers will throw a code.

I have a GM CAI (tuned by GM), Tony Mamo TB, and a couple questions. If i install your PP ported stock IM, can I expect the some gains. How do i find your website/order?

[KingLT1]

The ported IM makes the most gains(+15whp) out of any mods that don't require a tune. Your current mods might be gaining you +10whp if you are lucky.

[wnta1ss]

Originally Posted by PRAY

Send the K&N back and get the Roto-fab Dry. As far as all the testing I have done it is the only one that maintains the MAF transfer function. You can also do my ported IM/TB, and cat back. An U/D is had to remove and easily spotable at the dealership. I have seen gains in the 25rw range with the above minus the cat back. If you have NPP the cat back is a bit of a waste of time unless it is a sound issue. Headers will throw a code.

A big +1 to what he said. I recall that someone used the K&N CAI, and when their car was tested before tuning, it was pretty rich. That tells us that the K&N CAI screwed up the MAF.