blown81bu

I have a 2017 GS coming out of my 2016 z51
The GS is fast...feels like the updates to the A8 and OS(ecm)have really improved this car alot in performance.
Hard to believe its 460hp but i seem to believe its more
I did add American racing full length headers and no tune and it sounds amazing now..there are no afm in these cars now really helps with sound
What others think?..I put the procharger mod on hold for now

Im not going to add a procharger too quick on this one i want to see what it does in 1/4 mile in this form at the dragstrip as soon as cool air comes

bigsapper

Beautiful car. Love that color scheme.

Is the gearing different in the rear?

Also, did I understand correctly, no more AFM? I'd jump to a 2017 for that change alone.

blown81bu

2.73 same as z51
A8 auto
Yes no afm on GS..makes huge dif with headers...sounds amazing

KWC6

Great looking vette.

pickleseimer

For clarification, is it that AFM is eliminated in the engine, or is it that the muffler AFM valves have been eliminated? I seem to recall reading that at least the AFM valves on the front of the mufflers were eliminated for the 2017 GS and Z51.

blown81bu

There is none in front of mufflers.....makes it louder for sure

dvilin

Great looking GS enjoy it.

bigsapper

So actual AFM/DOD is still present in the engine?

redvetteman97

Awesome color love the red and black 😃

Vetteman Jack

Beautiful car - the red seats in the black car really makes it pop.

ddelallata

I just checked my 2017 A8 GS. AFM valves are there before the mufflers.

vanlieremead

I love the top down view of the hood and nose. It's just the way a sports car should look like. Thanks

blown81bu

here are some pics from yesturday to share

oldC5

Car looks bad azz , did you lower the car?

Jakeman11

Beautiful car, good luck. I have a question -No codes with the full length headers? I have the middies from ARH that are designed so you don't need a tune?

motomanvette

Always good to at least check your A/F ratio to make sure you're safe at WOT.

daleong

Per Tadge, the AFM valves were only removed from the M7 cars, not automatics.

jma242

I still have only saw one of these dyno'd. (The one that came in around 435hp) I still think it's underrated.

Friendly guy

A wonderful car and dream attained! Congratulations.

Also, a testament to the great power of suggestion. In this case GM advertising.

I live with the disability of being an engineer. Thus, your beautiful car cannot be faster than your prior non-GS car. But, if you believe it is then it is. Enjoy!

jma242

Despite the fact that one of these cars dyno'd higher than any Stingray?