Vortech Dyno numbers, WTF? 304 WHP?
#1
12-27-2005 | 02:24 AM
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Vortech Dyno numbers, WTF? 304 WHP?
I just got my car tuned and dyno'ed, and I'm dissapointed with the numbers...
I have a vortech on an 04 6mt coupe. they used a "Mustang Dyno".
The first run had WHP at 281, and after they tuned it, they were able to get up to 304 WHP. They told me that the Mustang Dyno is generally 10-15% lower then dynojet. But even with the margin, it would only bring the WHP up to 350. I was under the impression that bolted on the vortech delivered 350, and tuned closer to 380 WHP. I also have a greddy evo2 exhaust which I thought was going to bring the number up a bit.
Is this true about different dynos?
I want to get a smaller pulley and a new fuel system, but still stay lower then 400 whp. Do I have enough room to increase HP, or will the smaller pulley put me over 400 whp?
I have a vortech on an 04 6mt coupe. they used a "Mustang Dyno".
The first run had WHP at 281, and after they tuned it, they were able to get up to 304 WHP. They told me that the Mustang Dyno is generally 10-15% lower then dynojet. But even with the margin, it would only bring the WHP up to 350. I was under the impression that bolted on the vortech delivered 350, and tuned closer to 380 WHP. I also have a greddy evo2 exhaust which I thought was going to bring the number up a bit.
Is this true about different dynos?
I want to get a smaller pulley and a new fuel system, but still stay lower then 400 whp. Do I have enough room to increase HP, or will the smaller pulley put me over 400 whp?
#2
12-27-2005 | 03:40 AM
"Mustang Dyno" will give you a lower number than the other dyno's (true). The important part is to understand the power your gainning, if you dyno stock/Vortech/smaller pulley you will see the power increase. If your worried about saying you have 380whp then do the math on the difference between the different dyno's so you can compare with other's. At the end of the day I'm sure your car is just as strong as the other Vortech owners.
FYI congrats on FI!!!
FYI congrats on FI!!!
#5
12-27-2005 | 11:46 AM
Your all right with them numbers..dont be bummed . I got 320whp , thats with a plennum, headers, Rt cats , and Stillen dual . After I put on the smaller 3.12 pulley I ended up with 350whp . There are guys that have dynoed 425whp on a DynoJet and went to a Mustang and got 340whp . If you need to brag and make your self feel better...go find a DynoJet
#6
12-27-2005 | 01:00 PM
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From: San Francisco
Thanks for the info.
The reason why I am concerned is that I understand that this stock engine has a threshold of about 400 whp. I want to try to get those numbers, but I'm afraid that if I use a dyno with low numbers I could damage my engine.
I think for the fuel system and smaller pulley, I will have it installed at Zgarage in San Jose. sounds like they have everything I need.
The reason why I am concerned is that I understand that this stock engine has a threshold of about 400 whp. I want to try to get those numbers, but I'm afraid that if I use a dyno with low numbers I could damage my engine.
I think for the fuel system and smaller pulley, I will have it installed at Zgarage in San Jose. sounds like they have everything I need.
#7
12-27-2005 | 01:14 PM
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#8
12-27-2005 | 01:20 PM
a.k.a. RANDYS_G
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From: Glen Rose, Texas
Originally Posted by booger
Your all right with them numbers..dont be bummed . I got 320whp , thats with a plennum, headers, Rt cats , and Stillen dual . After I put on the smaller 3.12 pulley I ended up with 350whp . There are guys that have dynoed 425whp on a DynoJet and went to a Mustang and got 340whp . If you need to brag and make your self feel better...go find a DynoJet
#10
12-27-2005 | 05:38 PM
You can ask the dyno operator to add a correction of 10 to 15% to make it more like a Dynojet . Some operators do it with out even asking . Some tuners do the first run [ on a load base dyno ] with out adding it in . Tune the car and then on the last few runs , add it in , so it looks like they tuned it for an 80 to 100whp gain
#11
12-27-2005 | 11:19 PM
Mustang dynos read the low just like Dyno Dynamics.Just for reference, my car on a Dyno Dynamics reads 430whp on 93 octane map and low boost.Now when you correct it to the Dyno Jet #'s it goes up to 490whp..There are very questionable correction methods used by different shops and some people are overcorrecting their Dyno # to put their # up there WAY higher than they really put out..Chances are a Mustang dyno # of around 340-350hp is closer to 400-410..
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For your 350z/G35 performance needs.
Authorized Turbo XS UTEC distributors
Authorized Dyno Dynamics load based tunning facility comming 3/06!!
Authorizes Greddy Dealer/Installer
Authorized GTSPEC dealer
Authorized Unlimited Tuning Revolution dealer
Authorized Speed Force Racing Dealer
Email: Sales@racemrc.com
AIM: salesmrc
Phone: 732-251-8200
Mobile: 732-558-4560
MRC MOTORSPORTS
116 Main St.
Spotswood NJ 08884
#13
12-28-2005 | 01:06 AM
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#14
12-30-2005 | 02:27 PM
buschur racing in OH, just did a dyno comparison between a mustang dyno and a dynotjet. the car made 22% less whp on the mustang dyno. so going by that math you'd be around 370whp. Heres the quote from evolutionm.ne:
So dont sweat man, I think its making fine #'s
Originally Posted by David Buschur
Today I got a call from Tym Switzer from Switzer Performance and Innovation. Told me he had an EVO9 over there on his Dynojet AWD and wondered what we were making here for power. I told him an EVO9 will make between 200 and 215 on our dyno, typically. He said he just dyno'd one that made 281 whp and 273 ft lbs of torque.
This particular car has just a catback exhaust, nothing for a reflash.
I told him to bring it over and we'd compare it on our dyno. Same car, same day, two curious shop owners and see what the differences are.
On the way here he logged boost (note pad) and AFR's.
We pulled the car onto our MD500 AWD dyno, just as it was dyno'd on the his dyno.
First and 2nd pull were exactly the same right down to the single horsepower. On our MD500 AWD the car made only 218 whp and 214 ft lbs of torque!
This is a difference of 63 whp and 59 ft lbs of torque. That is a 22% difference.
Now anyone in doubt of this you have to understand Tym and I have nothing to gain, we wanted to put an end to the guessing. This is as fair as a test is going to get.
As a side note, on his dyno he ran the EVO in SAE correction, the correction factor was like .94, on our dyno the correction factor was .95. I am sure the weather and temps were not identical as our two cities are 30 miles apart.
This particular car has just a catback exhaust, nothing for a reflash.
I told him to bring it over and we'd compare it on our dyno. Same car, same day, two curious shop owners and see what the differences are.
On the way here he logged boost (note pad) and AFR's.
We pulled the car onto our MD500 AWD dyno, just as it was dyno'd on the his dyno.
First and 2nd pull were exactly the same right down to the single horsepower. On our MD500 AWD the car made only 218 whp and 214 ft lbs of torque!
This is a difference of 63 whp and 59 ft lbs of torque. That is a 22% difference.
Now anyone in doubt of this you have to understand Tym and I have nothing to gain, we wanted to put an end to the guessing. This is as fair as a test is going to get.
As a side note, on his dyno he ran the EVO in SAE correction, the correction factor was like .94, on our dyno the correction factor was .95. I am sure the weather and temps were not identical as our two cities are 30 miles apart.
So dont sweat man, I think its making fine #'s
Last edited by BlackStevo8; 12-30-2005 at 03:12 PM.
