Dyno Tuned FINALLY
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Dyno Tuned FINALLY 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.
Last edited by scarlett; Apr 16, 2008 at 04:36 PM.
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.
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.
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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!
I can post the last scan we did if you want to see those!
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Is this WHP? Seems way off, you got 90whp gain from those mods and on a Mustang dyno too?
These guys stuffed out http://www.maxchevy.com/tech/2007/ii_7-rocker-2.html 273 and 374 on there LS4.
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Staging Lane
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From: Fairport, NY
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.
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I'm not doubting you, it just doesn't make sense, ya know? lol
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. Thread Starter
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Oh, so that was in 2nd gear? Cuz that makes a difference usually.
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someone played with the settings on the rollers.
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From: Dolla$ , TX
Uh they don't do it to impress you they do it to make you think they did a good job tuning..
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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.
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From: K.C.
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.
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.
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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
More then anything, if these ARE real numbers, I might crap my pants, lol