[Z06] Dyno tune not what I expected...
Team Owner
Joined: May 2006
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From: Palmdale, Ca----- 2009 Cyber Gray 4LT A6 F55 452 RWHP 422 RWTQ- RIP 1998 C5 734 RWHP & 585 RWTQ-----
I would try elsewhere later on if you are in an area with other reputable tuners - might be worth it and you will be able to make sure the tune is spot on -
However, why in the world would a tuner set-up his Dyno in that manner with all the oil running forward - that makes no sense at all - could lead to oil starvation on the Dyno in higher RPM
It should be on a level surface not jacked up in the rear only, the front should be level with the rear -
Thanks,Matt
However, why in the world would a tuner set-up his Dyno in that manner with all the oil running forward - that makes no sense at all - could lead to oil starvation on the Dyno in higher RPM
It should be on a level surface not jacked up in the rear only, the front should be level with the rear -
Thanks,Matt
Drifting
Joined: Nov 2011
Posts: 1,377
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From: Chesterfield (St. Louis) MO
What was your AFR? Can you post up the chart? That would give us a better idea as to any potential problems.
I chuckle when I hear tuners stating their dyno is super stingy - most of them say that. It just makes their customers feel better.
I chuckle when I hear tuners stating their dyno is super stingy - most of them say that. It just makes their customers feel better.
Thread Starter
Melting Slicks
Joined: Nov 2011
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From: Virginia
Instructor
Joined: Dec 2012
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From: Louisville KY
Yeah, that looks to be a Dyno Dynamics dyno. They are known as the "heartbreaker dyno". They work differently than Dynojet and Mustang, and as a result ,they show lower peak numbers. There are a lot of articles on the web about these units.
I had my Z06 tuned this summer by James Short of Shortuning. He uses one of these, and the numbers were a bit better than yours, but I have LT's and only 11K mikes on the car, so it will be a little stronger. James said he expected mine to put down somewhere around 340ish on his dyno but it came in at 368.
I'm sure if you put it on another brand Dyno, you will see a big difference. Just keep in mind, it is only a number, if you like the way it runs, don't be bothered.
I had my Z06 tuned this summer by James Short of Shortuning. He uses one of these, and the numbers were a bit better than yours, but I have LT's and only 11K mikes on the car, so it will be a little stronger. James said he expected mine to put down somewhere around 340ish on his dyno but it came in at 368.
I'm sure if you put it on another brand Dyno, you will see a big difference. Just keep in mind, it is only a number, if you like the way it runs, don't be bothered.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
Yeah, that looks to be a Dyno Dynamics dyno. They are known as the "heartbreaker dyno". They work differently than Dynojet and Mustang, and as a result ,they show lower peak numbers. There are a lot of articles on the web about these units.
I had my Z06 tuned this summer by James Short of Shortuning. He uses one of these, and the numbers were a bit better than yours, but I have LT's and only 11K mikes on the car, so it will be a little stronger. James said he expected mine to put down somewhere around 340ish on his dyno but it came in at 368.
I'm sure if you put it on another brand Dyno, you will see a big difference. Just keep in mind, it is only a number, if you like the way it runs, don't be bothered.
I had my Z06 tuned this summer by James Short of Shortuning. He uses one of these, and the numbers were a bit better than yours, but I have LT's and only 11K mikes on the car, so it will be a little stronger. James said he expected mine to put down somewhere around 340ish on his dyno but it came in at 368.
I'm sure if you put it on another brand Dyno, you will see a big difference. Just keep in mind, it is only a number, if you like the way it runs, don't be bothered.
Last edited by bwill03z; Nov 24, 2015 at 08:58 PM.
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Thread Starter
Melting Slicks
Joined: Nov 2011
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From: Virginia
Le Mans Master
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From: Kelowna BC
Thread Starter
Melting Slicks
Joined: Nov 2011
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From: Virginia
"I sold the old dyno and can't pull anything up but the text documents from the dyno runs. Since I tuned your car I've gotten a new dyno."
Melting Slicks
Joined: Aug 2015
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Shakey
Drifting
Joined: Nov 2011
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From: Chesterfield (St. Louis) MO
Yes, he owes you the results. I can't believe someone would be so inept as to not save these files - and not give you a hard copy at the time of the tune. I'm thinking his dyno was having major issues, which is why he purchased a new one, and / or you got yourself a ****** tune.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
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From: Virginia
Just wanted to briefly revive this thread and get some opinions. I was told that the dyno used for my tune read right around 21% lower than a mustang dyno. This was from someone who had experience with the same exact dyno and a mustang dyno. So that would put my car right around 387hp. Is that possible with my mods or is that number a little too optimistic? Thanks
Drifting
Joined: Jan 2014
Posts: 1,285
Likes: 164
From: MA
Just wanted to briefly revive this thread and get some opinions. I was told that the dyno used for my tune read right around 21% lower than a mustang dyno. This was from someone who had experience with the same exact dyno and a mustang dyno. So that would put my car right around 387hp. Is that possible with my mods or is that number a little too optimistic? Thanks
387whp sounds bit on the high side for just intake/tune....I may be wrong , but I didn't think shorty headers did much if anything for power...I thought long tubes w/ X pipe is where you see the difference.
FWIW my car piut down 375ish to the wheels w/ vararam & tune on a "notoriously stingy" mustang dyno...so maybe you're in the ballpark w/ that calculation and maybe shorty headers are worth something (they didn't do squat but look good on my LS1 GTO tho - sold 'em on fleabay and got LT's catless)
Last edited by C5Dobie; Jan 20, 2016 at 12:38 PM.
Thread Starter
Melting Slicks
Joined: Nov 2011
Posts: 3,187
Likes: 266
From: Virginia
common acceptance is that dynojets read highest and are most popular now w/ many tuners as a result - still its just a number. Mustang brand dynos tend to real lower...and any other brands I am not as familiar with.
387whp sounds bit on the high side for just intake/tune....I may be wrong , but I didn't think shorty headers did much if anything for power...I thought long tubes w/ X pipe is where you see the difference.
FWIW my car piut down 375ish to the wheels w/ vararam & tune on a "notoriously stingy" mustang dyno...so maybe you're in the ballpark w/ that calculation and maybe shorty headers are worth something (they didn't do squat but look good on my LS1 GTO tho - sold 'em on fleabay and got LT's catless)
387whp sounds bit on the high side for just intake/tune....I may be wrong , but I didn't think shorty headers did much if anything for power...I thought long tubes w/ X pipe is where you see the difference.
FWIW my car piut down 375ish to the wheels w/ vararam & tune on a "notoriously stingy" mustang dyno...so maybe you're in the ballpark w/ that calculation and maybe shorty headers are worth something (they didn't do squat but look good on my LS1 GTO tho - sold 'em on fleabay and got LT's catless)