So your saying that JDP can get 455 at the wheels with CAI and ported TB/IM alone, no E85?? :twitch:

According to their web site, their stage 1 with CAI, Katech TB, MSD IM and tune will gain 45HP. Our cars stock (for A8) is ~ 380 - 385 HP at the wheels, add 45HP and that nets ~430HP max at the wheels.

The mods I have should have gotten me closer to 450HP at the wheels.

With tuning: (conservatively)
Roto Fab CAI - 10HP
Ported Soler TB - 5HP
LT's with off road pipes - 30HP
Flex fuel - 20HP

= 450 WHP

Or am I wrong??

I’d agree with most of that.

Flex fuel is worth 20hp over a 93 tune(10hp) so 30hp total

Or LTs are worth 20

Tb plus rotofab I’d say 10hp together

But yeah you’re not close. There’s something off.

I wanted to see the latest graph. the fueling will let us know if they remotely understand tuning a gen 5

MrRuss:
I had kind of the same issue with the very loud exhaust. My 2016 1ss setup has the StainlessWorks headers. I paired it with the same brand muffler = piss the neighbor bad.
My local muffler guy suggested the Borla mufflers. Went that way, problem solved! Only loud when you step on it hard. Otherwise you can cruise and no drone. Hope this helps

i made 422.5 from a mustang dyno, no tune with just Rotofab CAI. so those numbers are def off by a lot. you need to get it re tuned by someone who knows what they're doing.

I put down 413 to the rear wheels bone stock. Of course that's changed just a bit with the
ProCharger, lol!

whatre you at now? lol

JDP has a post here. Check it out

what does the car trap? what kind of dyno? putting any stock in final dyno numbers is silly, to say the least.

In this case I have to disagree. There are LOTS of "tuners" that have tuned LS motors and Mustangs that will happily take your money to tune your 6th Gen or C7.

Very FEW of them know a damn thing about what they're doing on these.

A GM performance specialty shop up here in the North GA mtns did a cam package on my buddy's 16 Camaro.
He blew his engine a week later tune was completely off and owner supplied a newish motor but still 2 months of downtime...

Local long time GM specialty shop did my Heartbeat install then owner tuned it.
Completely screwed up the tune despite post tune dyno reading 589 whp
Lol
Took it to Vengeance Racing and Mike took care of it.
He sat down with me and showed me everything screwed up with it. Now it is running right.

100% don't trust your LT1 to anyone but a very reputable tuner who has DOCUMENTED work/builds/customers with these specific cars. It is a very expensive lesson.
$900+ for me...

what exactly are you disagreeing with? i don’t see where you made the connection. your post regards the tune itself, not the final number vs real world performance, as my post did. i made no reference to the quality of tune.

In all honesty - the number IMO isn't that far off, particularly for running E50. All of that exhaust work is going to net you maybe 6-8 peak hp.

First the fuel - E50 is 50% ethanol and 50% 87 octane gasoline, which nets you 93-95 octane. Get a good batch of E85 into it and that alone will jump 10pts. You had no advantage over premium pump gas.

Second - though they are solid upgrades, most of your mods are the type of thing you need to support more air flow thru the engine. The factory exhaust is pretty much maximized right from the factory for the airflow the engine makes stock. Eliminating the cats did more for you (power wise) than everything else. The factory manifolds on the LT1 are actually not that bad flow wise, and the rest of the exhaust is 2-3/4". A lot of the headers advertise 12-20hp, but that also includes a tune.

Good news is that you are setup to go full smack in the future. Throw in a BTR Stg2 cam and a good tank of E85 with a retune and you will probably pick up 40whp as you have all of the other supporting mods.

I agree, on full E85 mine made 431 with basically the same mods and I picked up 5-6 mph at the track so I know it was making a lot more power. Dynos can read all over the place, that is why you get a baseline and then I final to see how much you picked up. On a cooler day with more alcohol content your dyno would probably be close to mine. I laugh when I see these guys boasting these huge dynos where the car made 460 rwhp with just a CAI and muffler delete, I always ask what does the car trap? Dynos can be configured to read anything people want but trap speed will always tell the truth.

This.

Thank you for the kind words!