scarlett

So yestarday I went and got a dyno tune done. We did 8 pulls and every pull we made some good changes. I forgot my laptop bag so the guy is shipping it on Monday but far as numbers go 337 hp 320tq on a Mustang Dynometer. For some reason we added gas and got more HP it did not need to be leaned out more. He also played with the DOD so I should get a few mpg more out of a tank now. Car feels like a friggin animal shifting from 2-3 I gained 15 hp 12tq with the tune. There is no KR at all and we were able to make the timing retard (knock) 0 out at the bottom and top end so it has a way better torque band. Also to note I have my highest HP going from about 5200 rpm all the way to 6100 rpm. Once I get my bag I will take a shot of my dyno page.

TiredGXP

iTrader: (2)

Hmmm, not sure what to think about the HP and TQ numbers you posted. 338 HP, if this is WHP, seems too much for rockers, CAI, exhaust and a tune. I can't see these mods giving you ~90 more at the wheels.

The gain you report from the tune seems reasonable. I suppose that what's really important is the measured, incremental effect of the tune rather than the total number - some other dyno is going to say something else anyway. An extra 15 HP (or 4.6%) sounds pretty good.

I'd be interested in seeing the torque curve. If you've got a better "area under the curve" on the torque band, that's probably better for overall performance than worrying about peak readings.

scarlett

I understand every dyno is different I do have the dyno sheets. Just forgot those and my video camera 3 hours away so they are getting shipped. I will take a screen shot of the dyno graph when I get my bag back early next week.

I can post the last scan we did if you want to see those!

Nacho SS

iTrader: (4)

Congrats....good numbers.

CdnMonteFan

3 hours away? who did it?

scarlett

These guys in Edmonton; He did an amazing job.

http://www.campbellautomotive.com/

GXPJAY

Is this WHP? Seems way off, you got 90whp gain from those mods and on a Mustang dyno too?

scarlett

I have a video and dyno sheets; once my bag gets back I will post the sheet and video. And yes it was on a Mustang Dynometer.

These guys stuffed out http://www.maxchevy.com/tech/2007/ii_7-rocker-2.html 273 and 374 on there LS4.

GXPJAY

Yes, 273 makes more sense with the mods.....338 is a HUGE difference.

I'm not doubting you, it just doesn't make sense, ya know? lol

Garou24

In the article, their baseline dyno of a stock LS4 was 255whp. The rockers alone added 18 whp bringing them up to 273whp. If the rockers are giving 18whp gains I can see 300+ whp with other mods in her sig. The final dyno number is not whats too important. Each dyno is different, but the gain of 18whp on the same dyno with just rocker arms is a great gain. I am excited for the dyno sheet and video.

scarlett

My bag got shipped yestarday so once I get it back I will post the video on youtube. And post the paper with the dyno results. I almost had a heart attack we were on the 8th pull and he decided to start the pull in 2nd gear to adjust some fuel/timing. He went to go honk on it and some how the rear strap broke and my car almost fell off the dyno it was hanging on by a 1/4 inch of my tires So after they pulled the car back with the truck we adjusted some stuff on the street and I left in a scurry without my bag and video camera. I am soooooooooooooo lucky the 3m tape on the front bumper was the only thing that got scuffed.

GXPJAY

Oh, so that was in 2nd gear? Cuz that makes a difference usually.

scarlett

All pulls were in 3rd gear the 8th pull he was going to adjust a couple things in second gear and then my luck the strap must have got touched by my the exhaust and snapped. Then he adjusted a few things while I drove on the street.

Area47

someone played with the settings on the rollers.

scarlett

My first pull I was both in the 300's so are you going to tell me I show up to a shop and they are going to decide to fiddle with the dyno to impress me? please... I'll post the before after sheets and video once they arrive.

Sint3k

Uh they don't do it to impress you they do it to make you think they did a good job tuning..

deft

iTrader: (7)

believe it or not scarlett, i think these folks are just looking out for you. great #s if its legit, but it couldnt hurt to hook it up to a dyno somewhere else.

06WHITEMCSS

OKAY, keep the flaming out of the thread untill the proof is shown. It seems everyone is so fast to flame one something they don't agree with. Let's let the proof, dyno sheets and video speak for them self, then if all is not what is stated, flame away. I myself think these numbers are about 15 hp high myself, not to mention the dyno was done on a Mustang Dyno, which generally have lower numbers than say a DynoJet.

Area47

on a mustang dyno. you set the weight of the car, and drag of said car. you also have the ability to change the weight of the rollers.

i pulled 600 whp from a nissan pathfinder with bolt ons and a bottle. real world numbers were 300 whp, and 350 ft lbs. how you ask? simple. rollers weight 10k lbs. vehicle weight 1500lbs.

mustang dyno's use this calc among others to set the eddy current brakes to create a certain amount of drag.

THIS is how it can be done.

GXPJAY

It's just unrealistic for these numbers with these mods on a Mustang Dyno. That's pretty much 350whp on a Dynojet. 100whp increase from bolt ons is off or else everyone would be doing bolt ons with same results.

More then anything, if these ARE real numbers, I might crap my pants, lol