C6vette57

Slp Cia slp lt and x pipe magnaflow exhaust and intune2 did a base run with out the pre tune made 345hp and added the pre loaded tune gain 5hp pretty sad because they advertise it it brig u 20+hp just the pre loaded tune anyway they tweeked it and gain another 5 so another so finall is 355hp and 350 tq disappointed because I've read ls2 with my set up gets 400hp to the wheels I'm thinking if selling my intune and getting a real tuner hp tunner

Dano523

Auto or M6?

LS-2 with M-6 should be putting 350rwhp/350torque to the dyno in stock form. On a auto trans, then the rwhp will be around 335/335HP instead in stock form.
Note, torque converter/auto trans robs you of around 15HP over a manual trans, and the LS-2 should be making 411HP at the crank stock with the engine still fresh either way.

LT headers should gain you about 25hp, and the tune itself should get you around another 15HP/torque more; on a fresh motor.


So the question really comes down to how fresh the motor still is to begin with/how many HP's you have lost from the higher mileage on the motor to begin with. Also, you always need to start with a stock dyno run on the oem set up to get a base line of how off the dyno or motor wear is to being with, then you can base the mods HP gains from there.

As for a can'd tune, or a live tune on a dyno, your always going to leave some HP on the table with a can tune for safety margin.

All stock LS- with M6 with just a dyno tune only, and again, base run before tune 350/350.

C6vette57

My motor has 17,000 miles on it what u think went wrong oh and it's a 6 speed

Dano523

Was the dyno calibrated for SAE rating at sea level, or was this an actual dyno numbers for the real HP/torque amounts at your elevation altitude instead?

With your low mileage and M6, your OEM run before mods should have been 350/350 on dyno if calibrated for sea level ASE.
Hence the above dyno sheet I posted is SAE calibrated to show the amount of power the car will make at sea level, but since the dyno was at 5.2K elevation, you have to tax those numbers with 3% per every 1K elevation increase, so the actual numbers that the car put down at that elevation of 5.2K elevation is around 16% lower that what the Dyno is graphing isntead.
Note, most dyno's are calibrated to read SAE at sea level, instead of actual level at there true elevations isntead. This is done so there is a neutral playing field across the board, and so guys at higher alludes don't start questioning the numbers when the motor put down way less HP that someone else at sea level instead.

irok

your numbers are right where they should be with the mods you have.with a proper dyno tune it may pick up a little more

CMY SIX

My LS2 2006 Mn6 75.000 miles full Z06 exhaust, roller rockers, K&N intake, PP throttle body, Vengeance racing tune, 381 RWHP 379.9 TRQ, stock LS2 is more like 345. get a "good" custom tune

LD85

Your info seems inline to me....

My baseline with a mail order tune, Cat back, 1-3/4 kooks, hi flow cats/kooks was 375 RWTQ & 362 RWHP

Added a cam and ported intake = 403 RWTQ & 434 RWHP

https://www.corvetteforum.com/forums...-with-cam.html

berk4422

My 07 LS2 A6 2.56 had an airaid intake, kooks headers, and Borla exhaust. The tune was a mail order Diablew Tune. It made 358 hp/366 tq. This was my baseline since it was my first dyno (after mods started).
I'm at 440/420 now... With a real dyno tune (and many other gofast parts) from RPM.

LZare

im down in texas i dont know the elevation difference but in my 07 ls2 m6 i put down 391/390 with vararam cai corsa axle back no cats and a tune from lmr. You should really get it dyno tuned if within range

Reaper410

My 05 C6 made 360rwhp and 362 tq after B&b headers and straight 3" pipe with aps exhaust.

Joey D

With a vararam, Z06 headers ,H and cat back my LS1 made 364/368 after a dyne tune. That was with over 80K miles. Given that you have headers, I think the only thing you need is a better tune.

Big ol 68

I made 382/377 with Vararam, Kooks 1 3/4 headers, kooks x pipe with high flow cats, corsa mufflers, and a **** tune. All on a hot day and warm motor. Car had 112k at the time (06 ls2).

C6Z512005

2005 LS2 MN6 (22,300 miles) tuned a month ago on a Mustang Dynometer. Also added prior to the tune 1 3/4 Kooks long tube headers w/high flow cats, Corsa Sports, Halltech CAI, and MSD plug wires. Ended up with 387/379.

AQWIKZ

I have a 2005 LS2 with the following mods Fast 102 intake, Ls7 Air intake, Ls7 exhaust with Borla S type II with 382 Hp/ 369 Torque
with 128,000 miles and counting.

03Zcrit

2005 LS2 MN6 with 90k miles, just installed Fast 102(not ported), Z06 manifolds/cats/H-pipe, corsa sports 2.5", K&N intake system(not a drop in filter) and got a dynotune on a dynapack dyno and came out with 387HP/388TQ

myredhead1

How do you like the fast? My ported 102 completely woke up my LS2.