Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35

My ATI ProCharger build at Ballistic Motorsports - '03 5AT Coupe

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Old Nov 7, 2007 | 01:35 PM
  #16  
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It can be done without a retune , but a retune is preferred to get the most out of it .
 
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Old Jan 13, 2008 | 11:41 PM
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BIG THANKS TO SCOTT @ BALLISTIC MOTORSPORTS!

Got my car back today after some delays (getting my valve body back from SFR, etc) and some headaches (chewed up belts on the dyno, barely fitting the IC piping, etc)... And let me tell ya, it was worth the wait. The car is stupid fast and the ProCharger sounds amazing! It's everything I expected and then some. The pickup is tremendous at ANY speed - I eased on the throttle to pass some1 on the highway, and, before I knew it, I was up to 120 . And the sound of that purge... oh man... u need to hear it in real life!

Well, I'm sure all of you are wondering about the numbers... long story short, it's about 400whp/350tq at 7psi (below are the graphs). I'm not sure what type of dyno was used, so dont ask . And the true test will be in the Spring when I take it to the track again!

A big snowstorm is gonna hit tomorrow, so I'll take pictures of the car once everything clears up.

BLUE IS TQ, GREEN IS HP


BLUE IS A/F RATIO, GREEN IS MANIFOLD PRESSURE
 
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Old Jan 13, 2008 | 11:52 PM
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FYI - yes, the procharger is LOUD. but, it's a good kind of loud... and mine doesn't really squeak at idle like some I've heard. In fact, if you let off the gas as you're cruising, the car's almost as quiet as stock (or maybe I forgot what stock sounds like LOL)
 
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Old Jan 13, 2008 | 11:55 PM
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Wow Nice numbers!!!!!
 
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Old Jan 14, 2008 | 12:01 AM
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Originally Posted by G35Rider92649
Wow Nice numbers!!!!!
thanks, bro... Dude, after driving around for about 4 hours, I can guarantee that you will love the procharger. It turns the car into a beast... and surprisingly, the power is very smooth! As you can see by the chart, there's plenty of pickup across the RPM range and the HP curve is very linear. I'm impressed with the kit, and I'm sure u will be too!

but just FYI - dont buy belts from ATI. they resell Gates belts and charge 3x the retail cost
 
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Old Jan 14, 2008 | 12:07 AM
  #21  
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At 7psi.....your 400whp and 350trq is higher than any other SCed car Ive seen at that psi level . Not even a MT6's have gotten 400whp at 7psi with a SC . I also see the A/F getting pretty lean after 5600rpms and dangerously lean after 6000rpms . Im sure the car feels great to you and for sure have fun with it , but be careful . I would think about getting another shop to check the tune for you and dyno it again .
 
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Old Jan 14, 2008 | 08:17 AM
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1st off , as we have stated to many before , dyno numbers are just a tuning tool and are not comparable. No two dynos will be the same . But I am not going to fight about this everytime someone post a plot . We have backed up our numbers before on a dynojet for comparison . This was done on a dynopack for those wondering . and it is actually 390whp ( he just rounded up )

The car is leaning out up top because he is running out of injector . To call it dangerously lean .... I think that is overdoing it . We have pulled some timing to compensate for this . Once the weather warms up this will level out . This is with 440cc injectors ...and no return system .. knowing that the injectors are maxed at redline help back the numbers on the dyno ..

He also has a J&S to go in . We are just waiting for a buffered wastespark adapter to make it work with the e-manage . He bought it used and it came with the standard adapter thats shown on the site . This is why most cant get a J&S to work with a e-manage. This will help as a safety if anything were to happen .


Arcady , I am glad you are happy
 

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Old Jan 14, 2008 | 10:43 AM
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Originally Posted by BMotorsports
1st off , as we have stated to many before , dyno numbers are just a tuning tool and are not comparable. No two dynos will be the same . But I am not going to fight about this everytime someone post a plot . We have backed up our numbers before on a dynojet for comparison . This was done on a dynopack for those wondering . and it is actually 390whp ( he just rounded up )

The car is leaning out up top because he is running out of injector . To call it dangerously lean .... I think that is overdoing it . We have pulled some timing to compensate for this . Once the weather warms up this will level out . This is with 440cc injectors ...and no return system .. knowing that the injectors are maxed at redline help back the numbers on the dyno ..

He also has a J&S to go in . We are just waiting for a buffered wastespark adapter to make it work with the e-manage . He bought it used and it came with the standard adapter thats shown on the site . This is why most cant get a J&S to work with a e-manage. This will help as a safety if anything were to happen .


Arcady , I am glad you are happy
The OP didnt mention the shop [ B motorsports ] told him he was running out of injector . But you do see this in the dyno chart . The A/F climbs over 12.5 to 1 at 6100 rpms and higher . And only goes to 6200rpms . Im sure the A/F keeps climbing after the 6200rpm's thats shown . I wouldnt be taking it to redline at all with this car . And I would be telling the owner to get bigger injectors and or a fuel return system.....pronto .....if he wants to drive his car hard.
 
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Old Jan 14, 2008 | 12:33 PM
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Originally Posted by BMotorsports
1st off , as we have stated to many before , dyno numbers are just a tuning tool and are not comparable. No two dynos will be the same . But I am not going to fight about this everytime someone post a plot . We have backed up our numbers before on a dynojet for comparison . This was done on a dynopack for those wondering . and it is actually 390whp ( he just rounded up )

The car is leaning out up top because he is running out of injector . To call it dangerously lean .... I think that is overdoing it . We have pulled some timing to compensate for this . Once the weather warms up this will level out . This is with 440cc injectors ...and no return system .. knowing that the injectors are maxed at redline help back the numbers on the dyno ..

He also has a J&S to go in . We are just waiting for a buffered wastespark adapter to make it work with the e-manage . He bought it used and it came with the standard adapter thats shown on the site . This is why most cant get a J&S to work with a e-manage. This will help as a safety if anything were to happen .


Arcady , I am glad you are happy
Thanks for the reply, Scott... and yes, I'm very happy with the tune. Once the J&S is installed, it will retard timing IF (and that's a big if) any detonation occurs. That's why I feel safe having such an aggressive tune...

That should be in a few weeks (just waiting on the adapter), so I'm not gonna push the car hard until then. I can't, anyways, since it's under a foot of snow right now LOL.

Plus, this testing was done in COLD weather (think New Hampshire in January). Once it gets warmer, the A/F ratio will drop.

Hope that explains everything!! And like I said before, don't waste your time questioning the hp/tq figures. The TRUE TEST will be the 1/4 mile track in the spring. My previous best time was ~14.3... hopefully I can hit very low 13's now.
 
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Old Jan 14, 2008 | 12:45 PM
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and the drama begins...
 
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Old Jan 14, 2008 | 02:51 PM
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Originally Posted by rockd
Thanks for the reply, Scott... and yes, I'm very happy with the tune. Once the J&S is installed, it will retard timing IF (and that's a big if) any detonation occurs. That's why I feel safe having such an aggressive tune...

That should be in a few weeks (just waiting on the adapter), so I'm not gonna push the car hard until then. I can't, anyways, since it's under a foot of snow right now LOL.

Plus, this testing was done in COLD weather (think New Hampshire in January). Once it gets warmer, the A/F ratio will drop.

Hope that explains everything!! And like I said before, don't waste your time questioning the hp/tq figures. The TRUE TEST will be the 1/4 mile track in the spring. My previous best time was ~14.3... hopefully I can hit very low 13's now.
Well good luck ! Have fun ! I predict a 13.2 @107-108 in the 1/4 mile
 
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Old Jan 14, 2008 | 02:54 PM
  #27  
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Originally Posted by booger
The OP didnt mention the shop [ B motorsports ] told him he was running out of injector . But you do see this in the dyno chart . The A/F climbs over 12.5 to 1 at 6100 rpms and higher . And only goes to 6200rpms . Im sure the A/F keeps climbing after the 6200rpm's thats shown . I wouldnt be taking it to redline at all with this car . And I would be telling the owner to get bigger injectors and or a fuel return system.....pronto .....if he wants to drive his car hard.
6200 is the rev limiter on his car ( edited , I know the dash says 6500 , but tachometers are never accurate . So you can substitute the 6200 for 6500 ) ... so it will lot be going any leaner due to higher RPM. You also need to know that the dyno reads AFR at at the tail pipe . This car still has its cats , hence the actual fuel mixture is richer due to back pressure .

Without viewing the actual tables of the EU you can only assume . AFR is not the whole picture when it comes to tuning

You are welcome to join my forum off my site and go under the Holyroller section as we explain more about tuning there . I am not going to repeat ourselves on every forum when one of our customers post . Hope to see ya there
 

Last edited by BMotorsports; Jan 14, 2008 at 03:28 PM.
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Old Jan 14, 2008 | 02:56 PM
  #28  
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Originally Posted by 617G
and the drama begins...
No drama here how much snow do you have Andy ?? we have about 10" now
 
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Old Jan 14, 2008 | 03:10 PM
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Originally Posted by BMotorsports
No drama here how much snow do you have Andy ?? we have about 10" now
Boston got 4-6, I probably got around 8...thank God the G is in a garage I didn't make it to Ventura's on Sat
 
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Old Jan 14, 2008 | 03:11 PM
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btw Arcady, how is the VB?
 
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