EMINENT 1

Before and after Borla X-Pipe.



After PTB, Halltech, X-Pipe, Magnaflow axle back.

Mikec7z

same day, there will be an increase. 2 weeks later, you might come to find out your gains are gone.

Z0HS1CK

that sounds sick dude.

how does the car run long term wise? I have a 16 like yours so we should be clear from any issues the 17+ models get.

saleen556

AZGASSER

A 14 RWHP gain is about a 3% improvement over baseline. Is that within the margin of error or variability between pulls? I am not sure about consistency on dynos as I am not in the tuning/dyno business. I deal with math and science and we ask is statistically significant when something changes.

jstewart

On the subject of warranty and ECU tunes my dealer who I have a relationship with told me that they would not refuse a warranty claim as long as the claim didn't require the return of the ECU to GM. This would be required on any engine, transmission or associated warranty claim. It was my understanding that any alteration to the tune no matter whose tuning system is used (including Diablo) would leave a signature that GM would see. Is this correct??

saleen556

Checkmate1

I think the Katech PTB is slightly less 'aggressive' than the Mamo PTB. I think it was deliberately done by Katech to not mess with the existing calibration from the factory.

There are so many threads of folks (2017 Z06's and newer) having CEL's come on. This could be a function of the revised software changes to the motors following the bigger SC cover on the LT4's.

From everything I've heard, the 2015 and 2016's are very mod friendly.

Mine is a 2016 Z06 w/BMS Filter + Katech PTB + Diablo Sport Tune. I will be dynoing one of these days to get a proper reading to see if these 'mods' have improved or degraded the performance. Will report back.

Habeas Corpus

likeaboss

Did you happen to do a stock baseline. My best stock SAE 5 baseline was 575HP/602TQ.

Habeas Corpus

BrookenookZO6

Mike Jesse

I have a 17 auto Z06 with the BMS filter and a Mamo TB.
Adding just the BMS and all was good.
Bolt on the TB and I got a check engine light. Let the car sit at an idle for a minute or so and the light went out.
All is good. Never been on a dyno, but it's run a best of 10.75 @ 129 in this form.

Add lightweight wheels and tires and I'm down to a best of 10.57 @ 132.

The Borla just arrived 10 minutes ago.

likeaboss

Again my car feels fine with all three mods installed, but the dyno shows that they're not making anymore power than bone stock and it's all placebo effect. I'm surprised but then in a way kind of not surprised so many people go modding without getting a solid baseline. Then check in to see how things are doing over time when you're running no tune. That's pretty risky...

As for the PTB and x-pipe dyno without the BMS filter that won't happen until next week. If I continue to see no gains then I'll remove the PTB and dyno again with just the x-pipe. To be continued...

Mike Jesse

Why waste the money on the dyno if you are not going to tune it?

You have some of the best tracks in North America at your disposal. Why not run it at the track to validate you mods instead?

BrookenookZO6

likeaboss

I'm kicking myself I didn't hit the track bone stock first as I have nothing to compare my car to other than other people's numbers. As for the dyno it's a friends shop and he's been kind enough to help me out on this little quest. Since I'm using the same dyno each time it's a good measuring tool to see what if any improvements are gained. I don't think it's a waste because if I hadn't dyno'd it with the mods I wouldn't have know the car was running rich and not picking anymore power. If anything my experience can serve as a cautionary tale to those running out thinking all these mods without a tune are really going to net them gains long term.

Same which is why the end result sucks...

383vett

As I had mentioned before and others have said, screw the dyno and head out to the track. You seem to be so hung up on before and after dyno numbers that you can't see the forest for the trees. Run it at the track. If you're trapping around 130 with your mods, than walk away smiling and don't worry about numbers. Who cares what a dyno sheet says. It's real world results you're after, ie a time slip.

madrob2020

Seriously, some of these pics are ridiculous. Don't you guys have a scanner? At least use a camera/phone that can show the data so we don't need a magnifying glass to read it. Not only is it W_A_Y too small, it's cut off so all the data couldn't be seen anyway. It's not just you 3Z06 there's many more like yours (but your's is the worst I recall)

EMINENT 1

No probs, man! Thanks!

These runs were done several months apart btw.