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Old 12-28-2012, 05:01 PM   #163
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Sounds good also, any chance of seeing the print out of both dyno runs?
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Old 12-28-2012, 05:38 PM   #164
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Nice gains!!!
In which gear did you do the runs?
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Old 12-28-2012, 06:13 PM   #165
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Well the numbers are in, It gained 6.5 hp and 4.5tq over a DC Sport header. Not overly impressive but there was some decent gains in midrange torque.

A video of the dyno run.

http://www.youtube.com/watch?v=fpkgkDjwHVg A
Not bad, how's the AFR?
LTHs are prone to lean.
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Old 12-28-2012, 07:02 PM   #166
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I have a dyno from before but its not comparible. All runs were done in 3rd gear that was actually an issue today. There was a slight lean spot but it was still very safe. Illl post the sheet later tonight.
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Old 12-30-2012, 10:09 PM   #167
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Where is the chart?
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Old 12-30-2012, 10:50 PM   #168
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Spaced On That Sorry.
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Old 12-30-2012, 10:55 PM   #169
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Remember these gains are over a dc header and the car doesn't have a cai or tune. I'd expect some healthy gains with a tune on top of this and another 2-5 with a cai. These numbers also represent fwhp not whp. I'm also mostly shocked that I didn't have any noticeable powerloss anywhere in the powerband.

Dynapack dynos need to be calibrated for a gearing so it doesn't matter which gear it was run in. The numbers appear high because they are typical of what you would be seeing at the crank not at the wheels, so typically you'll need to take about 9% off to get typical dynojet numbers and 15% off for a Mustang dyno.

Last edited by xnamerxx; 12-31-2012 at 11:21 AM. Reason: Added some stuff
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Old 01-01-2013, 02:02 PM   #170
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SICK!!!!

Are the different lines the runs from the previous (DC header) run?
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Old 01-01-2013, 02:02 PM   #171
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Good work, looking forward to see the finished item!
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Old 01-01-2013, 02:24 PM   #172
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This is awesome !! I have my car supercharged and dynoed on a 4wheels dynojet and made 125whp and 128lbft.......not that much different from this but a lot more Moolah spent !!

Any chance to make a copy of the header?
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Old 01-01-2013, 02:31 PM   #173
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The lower lines were from the DC header run the upper lines are from my header.

You can see the VVTI freakouts on the runs with the green line between 5k-5.7k but overall it performed about as I expected. Now I just need some tuning and a CAI and I'll probably get another 7-15 hp from it :)
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Old 01-01-2013, 02:38 PM   #174
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I am looking at making additional header but have some issues I haven't quite figured out yet. My welder is down for making additional ones and I have all the models for the flanges and tubes, but the big issue I have is that most CNC bending shops require I buy at minimum of a certain amount of tube bends which would make it extremely expensive to reproduce so that's the big thing that I've been trying to figure out.
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Old 01-01-2013, 10:47 PM   #175
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Quote:
Originally Posted by vten View Post
This is awesome !! I have my car supercharged and dynoed on a 4wheels dynojet and made 125whp and 128lbft.......not that much different from this but a lot more Moolah spent !!

Any chance to make a copy of the header?
You can't compare your #'s to his. I ran intake, header, res-back exhaust and supercharger to 135whp and 130wtq....ran 106whp/107wtq same dyno, different year with just intake and exhaust
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Old 01-01-2013, 11:44 PM   #176
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Wait ... I'm confused .

Xnamerxx, those number you posted , are those on the wheel # or on the crank #?
What mods did u do beside that long tube header ?

@barber : if the number he posted is on the wheel hp # , then I guess I have a really weak engine .... I have the AEM CAI, weapon r header, blitz supercharger, nitto mid and exhaust .
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Old 01-02-2013, 08:04 AM   #177
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very solid gains, congrats! I guess i'll be making my own header now to replace my Weapon-R...
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Old 01-02-2013, 08:11 AM   #178
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Quote:
Originally Posted by xnamerxx View Post
The lower lines were from the DC header run the upper lines are from my header.

You can see the VVTI freakouts on the runs with the green line between 5k-5.7k but overall it performed about as I expected. Now I just need some tuning and a CAI and I'll probably get another 7-15 hp from it :)
It'd be sweet if you could gain more power from it for sure.

The best part is that you're up 5lbft at ~2700rpm and still up by that much near redline... SOLID gains!
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Old 01-02-2013, 09:07 AM   #179
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@barber : if the number he posted is on the wheel hp # , then I guess I have a really weak engine .... I have the AEM CAI, weapon r header, blitz supercharger, nitto mid and exhaust .
Every dyno is different
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Old 01-02-2013, 11:50 AM   #180
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This dyno is a reflection of engine hp not wheel hp so the numbers appear kinda high. A dynojet is roughly 9% lower than this and a mustang is roughly 15% lower. Every dyno is different but I chose a dynapack because its far more consistent since there are less variables that will affect it.

Aside from exhaust changes I have a drop in air filter and a lightweight pulley. There is no other changes to the motor. With a supercharger you'll likely see minimal gains from a header since forced induction cars don't really scavenge, its far better to just go with the biggest tubes available and have them be large enough to take the total cylinder volume with total psi added that would be far more beneficial.

Yeah when I speced the header with the software I was running, I chose a powerband between 2500-5800 which is exactly what I ended up with, I was actually a bit surprised on how accurate that number ended up being but it was supposed to be.

A word of warning I would advise against this unless you feel comfortable running a solid/semisolid torque strut mount. Even with flex joints in place there is nothing that allows them to move for and aft so the exhaust will end up moving in 3 dimensions up down forward and backward and flex joints will only help in the up and down and you'll still end up with interference issues. Its not so much an issue with acceleration movement but deceleration movement as the motor moves a ton when you downshift or brake hard, far more than when you bang it off the rev limiter and it shifts everything up into the tunnel which you have less clearance to the floor. If you want to get an idea of how much movement you actually have get a camera pointed at the dogbone get in the car and slowly load the motor up until it stalls, you'll see the rubber twist a considerable amount. In essence you'll end up with the mid pipe hitting the chassis with the stock torque strut mount on deceleration.

This project has kinda shown me why no company has produced one of these before, its not that gains can't be had because its clear they can, there are just quite a few drawbacks to doing this.
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