zinsavage123

A manual ls3 with dyno tuning, intake, headers and exhaust making 440+rwhp/440+rwtrq? I have never seen these kinds of numbers from a tune with these mods, seems extremely high. I mean these things dyno stock what 380/390ish give or take?

The video here is a recent Race Proven Motorsports video, the part in question starts at 16:10

HOXXOH

It looks like a math error. If we assume stock diameter tires, the 3.42 gear in 4th at 127 mph, the RPM would only be 5427. It's pretty clear the RPM is way past the 5252 torque vs HP crossover RPM at its highest point.

redbird555

LSX228R

Dynos vary so much. My setup will do mid 560's on one dyno and 620 on another. Both dynos are with in a hour of each other.

zinsavage123

Yeah guess so, cause I have seen hardly anyone with the same mods if not more make these kind of numbers on a ls3 with basically bare bones bolt ons. Guess that is one hell of a tune also.

zinsavage123

Are these things super rich from factory? if not guess these guys are amazing tuners, which is awesome. Just shocked cause like I said I have peeked at a lot of dynos and ls3 manual and auto with similar mods numbers, and most are low 400s at best on average....guess it is true, its all in the tune

z288uup

What were all the bolt ons you had on your car?

08z51m6Ls3

My 08 Z51 M6 car made 454hp and 450 ft lb with Vararam, Texas Speed 1 7/8 headers and offroad x pipe, through an NPP with a tune from Lamar Walden in Atlanta. People call BS all the time and the dyno may read fat but I'm happy with the power of the car.

Not So Fast

So having read this all I can say is mine made 365RWHP with Kooks 1 3/4" LT, hi flow cats, NPP on a DynoDynamics dyno (which was highly disappointing) but I'm fine with it because I would place a friendly wager that the 2 cars would be very evenly matched in a race. Its all just numbers and how the machine (Dyno) is set up, plus the tuners ability
I may be wrong but I''ll go with that
NSF

Dano523

Lets make it simple.

at crank, LS3 makes 430hp stock

At rear wheels, M6 will have about a 61HP drive line loss, while A6 will have a 83hp drive line loss isntead.

So stock dyno should read ASE about.
M6, 369RWHP
A6, 347RWHP

Now long tube headers will add about 25hp, and tune will pick up about 16hp more over the stock oem tune.

So M6 with ASE 369rwhp, with 25hp from the headers, another 16 from the retune (Drive line loss is constant and is already pulled from the RWHP number from the crank number), should be making about ASA 410RWHP. The intake will not show up on the dyno as any increase in HP since it a device to prevent loss of power by timing retard with the motor sucking in hot air isntead..

So the only way that you end up with 430rwhp with the mods shown,is that the dyno is reading 20hp higher to begin with. So on the base run all stock, the dyno would be showing the car making 389HP instead.

To sum it up, we know that ASE HP on the LS3 is 430 stock, we know what the drive line losses are since they are constant for both the auto and manual trans, and with know what each mod will add about in power (or not), so we can come up real close to that the car should be making ASA on the dyno as well. Hence this is the reason if you are looking for the rear HP gains on a dyno from after market parts, you need to run a base line dyno before the parts are added as well.

Hence there are some other tricks like running E85 instead of petrol to push the timing to gain some more HP over the base tune gains, straight through mufflers over restricted muffler may pick up another 6hp, but it not going to get you the 20hp in question isntead.

Turbo6TA

2011 GS / A6 .. Bone stock with NPP option

9,500 Total Mileage at the time

These are my before and after Dynojet results ... All numbers are SAE corrected for standard conditions
_____________________

Stock Net HP: 436 Advertised


Stock RWHP: 371 (This equals a 15% Drivetrain Loss with the A6 transmision)

Added Pfadt Headers with Cats and Dyno Tune RWHP: 405 (34 RWHP Increase)

This was using the same Dynojet on the same day

I don't have a copy of the 'before' Dynojet results, but here is a copy of the 'after' results:

Attachment 48338516

The HP number stopped climbing above 5,500 RPM (I don't know what the deal is with that) ... Like it just hit a wall between 5,500 and 6,000 RPM

.

Not So Fast

Yep, key word in equation is "DynoJet" dyno numbers VS "DynoDynamics" dyno numbers. I did a lot of research about this and have written testimony as to guys who concur with both Rons and my outcome, the big elephant in the room is the brand name of the dyno used. The dyno as explained to me is just a "Tuning tool", so don't get hung up on numbers is what they tell me :yesnod
Lets be honest and somewhat smart about this, you cant tell me that the same car VS another of the same make and model, engine and tranny will make some, in my case, 80 RWHP more, naw not buying it
NSF

NSF

HOXXOH

Put a hot cup of coffee next to the air temp probe and watch the HP numbers increase.

Real numbers are on timeslips. Still waiting for the first M6 LS3 bolt-on to go quicker than 11.25. Seven A6's have done it. There are 5 bone stock Z06's that are that quick and they dyno in the 440-450 range. So is it the dyno or the driver?

(442 HP)
(448 HP)

Turbo6TA

EXACTLY ....

And I got money that if me and 'Not So Fast' ran our cars from a slow roll on up to lets say 130 or so, they would more than likely run pretty much dead even.

Bottom line ... All these various dynos are [great] for tuning, but really not much else.

.

Dano523

LS7 makes ASE 505hp oem at the crank, M6 61'ish hp drive line loss, so 442 and 448 RWHP numbers are about right ASE numbers on the stock tune/stock motor.

njedwardz

I agree with a lot said in this thread. The dyno has two purposes; the first is to put a constant load on the car to tune the engine computer at all RPM/airflow points (something most tuners neglect anyway), and the second is to compare the performance gains of a particular modification or tune performed on the same vehicle on the same dyno (ideally the conditions would be identical as well but this is less important with correction factors applied properly).

I do have to say that my '13 A6 made 366/380 stock and 439/451 with headers, intake, tune on the same dynocom dyno. That same combo on a Superflow (a real loaded dyno, not just an inertia drum like dynojet/dynocom) made 403/391, so it's pretty obvious that comparisons between dynos are worthless.

TL;DR: Go race people if you care about numbers.

rajahhindi

Funny you say this. My 08 base A6 made about the same rwh here in Australia on the same make dyno with very similar mods. I added a stock stall cam and had it email tuned by Shane Hinds and it made 400 rwh on same dyno. This cam has made repeated 450 whp on different Mustang dynos in the US. Now my car is supercharged with
a magnuson heartbeat and makes 550 at the tyres on the dyno dynamics. Ide guess this about 600 on a dynojet or more.

redbird555

redbird555

Rod Johnson

Most people don’t come anywhere close to what ls3’s are really capable of. They should be 450+ with bolt ons, 525 or so Cam only and closer to 600 rwhp HCI these days.