matt c6

i dyno tuned my 06 LS2 vette 6 speed paddle shift auto with hp tuners on a dynojet and was suprised at my low numbers. My mods are: vortex intake, ported throttle body(jantzer performance), stage 2 ported intake by jermy formato,comp 1.82 rockers, .625 lift springs, chromoly push rods, B&B LT headers,x pipe,and exhaust,160 stat, no cats. final dyno was: 369hp@5900 356tq@4800. that was after tune. Before tune baseline was 348hp@6000 and 344tq@4000 with all mods listed above. tuner picked up 5 hp and tq from 3-4k, 15hp and tq form 4k-5k and 20hp and tq from 5k-6.5k. tuner said there was also some knock still in engine like 5 degree's or something like that? Tuner said he could get 15 hp and tq more out of it but he has to do some 100 octane test first to find out some knocking issues? is that bad numbers? How n the hell is a full bolton auto c6 putting down below 350 with full bolt ons untuned? i dont get it. please help. it seems tuner picked up descent amount of power in tune. just baseline #'s is scaring me. does elevation and wheather make a difference? conditions are: 69.83F, 27.64 in hg,humidty 14%, sae 1.06 thats what dyno says. which equates to a Density Altitude of 6433 feet. is my high da causing low numbers or does dyno correct for all that stuff. someone said it does but then the dyno guy said when i go to irwindale this weekend my car should have like 20 more hp becasue of elevation and good conditions.

SL33PER

dont feel bad, those numbers are good for the bolt ons you have. When my car was stock it baselined at 319hp. The real numbers that matter to me are on the track not the dyno.

Nasty C6

why the 1.85 rockers? on intake and exhaust? and your still stock cam,....

matt c6

i did the rockers because i was not ready for a cam swap yet and was told i could raise the ratio of rockers to get a little extra hp from moving lift to 545. And i bought them becasue i heard there lighter, life time warranty, roller tip, and i was told i could still use them if i did go to a cam.

LVFR2DY

Hey Matt, I am in Tucson also....who did your tune?

matt c6

jeramiah is his name he is in real estate for his main job. I dont remeber his last name but my girlfriend does becasue she works on some of the same contracts as him for work. he didn't actually work for a company to my knowledge. but he said he used to be in the business for 10 years and had a twin turbo c5 at one time and does all off his friends porsche's tunes and everything else u can think of. he made me pay for liscense fee for hp tuners $150. is that normal? i did not know tuners or dyno shops have to pay for a program for every individual car they tune?

LS1LT1

Just a little FYI in case you weren't totally sure...the above mods are not considered 'bolt ons only' type of mods, those actually fall under the 'internal mods' category (as they do touch engine oil). Of course that only matters if you're going to submit a time slip for one of the 1/4 mile or 1/8th mile lists.

Not sure why your power is reading low, could it possibly be a misjudgement on the pushrod lengths, an adjustment issue (shims?) on the rockers or even simply too much spring for the stock cam?
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LVFR2DY

Im not sure bro, wish I could offer better advice. I took mine up to Tempe at Xtreme Motorsports. I thought my numbers were a little low (just have headers, intake, exhaust, 160), but yours seem really low. I put down 356/358 after tune. I also have an 06 A6. Did you feel like this guy knew what he was doing?

jpee

Personally I don't put too much stock into "Dyno" #s... mine made 360 (am I right Mark) and it ran 12.08 @ 115

I had a 1996 LT1 A4 that never had the heads off, it had STOCK exhaust manifolds, stock, cam, .. all it had was 1.6 RR, 3200 converter, and 3.73 gears... oh & a Breathless intake & 160 T Stat..

T would run consistent 12.30's (best 12.28 @ 112 mph) That was a 96 LT1 and never had the heads off... it was never even on a dyno...

But it sure won its share of races.. DEAD NUTS CONSISTENT CAR !

silvervette05

Hey bud, i wouldnt worry to much about dyno #'s...mine did 379 with the ported fast92,ported TB,halltech CAI, and z06 exhaust..But i still managed to run an 11.34 with a 6 speed..As long as you can go to the track and run god times that's all that matters man..

jmudreamvette

silvervette05, Great track #'s. You must be a shifting fool and still under 400rwhp. He right, take it to the track to see what it runs.

LS1LT1

Sometimes dyno numbers don't tell the whole story, very often it's more about the combo.
Even with only 393rwhp I was able to get into the high 10s at over 125mph+ with my LS2 A6 bolt ons only car.

matt c6

yeah he did seem like he knew and i did something with him before where he could of taken advantage of me but he didn't and told me to watch out because some pople are not always honest. so i don't see why he would rip me off.

matt c6

so elevation and wheather cannot effect hp and tq?

silvervette05

Thanks,yea i tend to drive it like i stole it..

dennis50nj

sure it could, but the dynos are usually corrected

mitchell c

Don't sweat dyno readings especially with an auto tranny. Your numbers in the 1/4 are the only numbers that mean anything.

LSCHLEM

Not everybody wants to run at the track. Then the only thing that means anything then is engine output in HP/TQ.

The Op would do much better with a PRO TUNE. I dont know why he didn't
have Jeremy Formato tune it when he got the OEM manifold ported. He should easily get to 380-388 RWHP/TQ with a PRO TUNE.

jpee

I may be misunderstanding your post.. but if you don't plan on tracking your car (1/4 mile or road course) what difference does it matter if it makes 200 RWHP or 2000 RWHP... if your not going to put it on a track, just put loud mufflers, and be a boulevard crusier...

Fore58

Headers would complement your bolt ons if you're worried about dyno numbers. 380 or better....and that would be a strong A6.