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Forced Induction Turbochargers and Superchargers..Got Boost?

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Old Aug 27, 2006 | 02:45 PM
  #21  
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Originally Posted by Zivman
I would think the boost is dropping more on the dyno because of the load (or lack of load at the upper RPMS) he is putting on the car.
Nope..our dyno puts a constant ramp rate on the rollers (same as MRC's)...it doesnt drop off at higher rpm. The ramp rate (load) is an acceleration rate...and it is linear throughout.

MRC, I too, would love to see the boost chart dyno run...I will give you a big hug if you can figure out why the boost drops on the single turbo APS systems.

Nice work on the install...looks clean.
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Old Aug 27, 2006 | 03:11 PM
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Originally Posted by Sharif@Forged
Nope..our dyno puts a constant ramp rate on the rollers (same as MRC's)...it doesnt drop off at higher rpm. The ramp rate (load) is an acceleration rate...and it is linear throughout.

MRC, I too, would love to see the boost chart dyno run...I will give you a big hug if you can figure out why the boost drops on the single turbo APS systems.

Nice work on the install...looks clean.
The car initially dynod, hitting 8psi then dropping to 4 spi. We tightened the wastegate actuator pre-load about 1/8" and on the road the car seems to hold 6-7 psi under full boost. Were not putting it back on the dyno until we get the exhaust on the car.
On a side note, the last time we saw a turbo not hold boost, was on the last Turbonetics kit we did, where the car would barely hit 6-7 psi..Turns out the turbo was bad, as the impellar blades were touching the housing and chewed themselves up within 40 miles..
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Old Sep 11, 2006 | 07:24 PM
  #23  
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OK we should have some final numbers by weeks end. The exhaust should be here tomorrow!! Can't wait, all this granny driving is killing me!
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Old Sep 11, 2006 | 07:47 PM
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why are you granny driving, its perfectly safe on the out of box tune.
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Old Sep 11, 2006 | 08:00 PM
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pm me you email address tig and i'll get my last boost graph from car version2. i'm trying to get an aps exhaust from grd. if i do get it, i'll get a retune and get you a graph from a more recent tune.
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Old Sep 12, 2006 | 03:45 PM
  #26  
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Originally Posted by tig488
why are you granny driving, its perfectly safe on the out of box tune.
Better safe than sorry! plus I had to let the clutch settle....
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Old Sep 12, 2006 | 05:17 PM
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Glad your enjoying your car i will be back @ MRC over the winter for a re tune
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Old Sep 12, 2006 | 06:36 PM
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Very nice.

Goodluck.

M
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Old Sep 13, 2006 | 07:08 AM
  #29  
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Originally Posted by Ep3
Glad your enjoying your car i will be back @ MRC over the winter for a re tune
What kit are you running and why do you need a retune?
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Old Sep 13, 2006 | 07:10 AM
  #30  
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Originally Posted by Ep3
Glad your enjoying your car i will be back @ MRC over the winter for a re tune
Thanx for all the well wishes guys. I will post the DYNO #'s when I get them. I am confident I won't have the Boost drop off as some have becase the team over at MRC is top notch! Can't wait!
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Old Sep 13, 2006 | 07:21 AM
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Originally Posted by JasiJ
Thanx for all the well wishes guys. I will post the DYNO #'s when I get them. I am confident I won't have the Boost drop off as some have becase the team over at MRC is top notch! Can't wait!
Jasi, PM me whenever you're gonna be back over at MRC, i'd like to stop by and check your kit out, maybe take a spin around the neighborhood with you
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Old Sep 13, 2006 | 11:54 AM
  #32  
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Originally Posted by NYC_G35C
Jasi, PM me whenever you're gonna be back over at MRC, i'd like to stop by and check your kit out, maybe take a spin around the neighborhood with you
Hey man, it should be tomorrow night. I dropped it off yesterday and should be ready by tomorrow at the latest......I'll let you know for sure....
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Old Sep 13, 2006 | 01:48 PM
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Originally Posted by Enron Exec
What kit are you running and why do you need a retune?
procharger .. i had to take the car b4 it was done 100% b/c i was shipping the car to cali to get painted.. plus i have a new exhaust and maby ill put headers dont want to take any chances
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Old Sep 15, 2006 | 08:43 AM
  #34  
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Originally Posted by Sharif@Forged
Nope..our dyno puts a constant ramp rate on the rollers (same as MRC's)...it doesnt drop off at higher rpm. The ramp rate (load) is an acceleration rate...and it is linear throughout.

MRC, I too, would love to see the boost chart dyno run...I will give you a big hug if you can figure out why the boost drops on the single turbo APS systems.

Nice work on the install...looks clean.
We managed to hold a perfect 8.5 psi all the way to redline, no issue at all..We utilized the APS exhaust system for it..I think alot has to do with improper install..We have done so many APS installs, we consider ourselves experts..In fact we possibly have done more than APS themselves..lol
Im sure Jaso will post his dyno charts later today when he gets a chance..We did 310 ish DD and 360 ish DJ corrected..
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Old Sep 15, 2006 | 09:16 AM
  #35  
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Originally Posted by MRC Motorsports
We managed to hold a perfect 8.5 psi all the way to redline, no issue at all..We utilized the APS exhaust system for it..I think alot has to do with improper install..We have done so many APS installs, we consider ourselves experts..In fact we possibly have done more than APS themselves..lol
Im sure Jaso will post his dyno charts later today when he gets a chance..We did 310 ish DD and 360 ish DJ corrected..
Please post the boost chart...I'd love to see it.
Improper install...that's a funny one.
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Old Sep 15, 2006 | 10:17 AM
  #36  
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Originally Posted by Sharif@Forged
Please post the boost chart...I'd love to see it.
Improper install...that's a funny one.
Hey guys, give me a few, my scanner picked the worse day to freak out on me! I should have it ready soon.
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Old Sep 15, 2006 | 10:33 AM
  #37  
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Default Here they are!!

Read them and weep!! first is No Correction, Corrected then AF and Finaly Boost!

The car rides even smoother now with the new exhaust and let me tell you, the power keeps on comming!! no let up at all to red line!!
Once again, HUGE thanx to Julian, Mat, Jason and every one down at MRC!! Have a great vacation!

Last edited by JasiJ; Nov 1, 2007 at 08:05 PM.
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Old Sep 15, 2006 | 10:40 AM
  #38  
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Awesome....glad we've finally seen a legitmate boost chart with an APS single T making boost to redline.

Curious why the engine isnt making power past 4800rpm.
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Old Sep 15, 2006 | 11:01 AM
  #39  
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Originally Posted by Sharif@Forged
Awesome....glad we've finally seen a legitmate boost chart with an APS single T making boost to redline.

Curious why the engine isnt making power past 4800rpm.
I dunno.....should it?
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Old Sep 15, 2006 | 11:32 AM
  #40  
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Originally Posted by Sharif@Forged
Awesome....glad we've finally seen a legitmate boost chart with an APS single T making boost to redline.

Curious why the engine isnt making power past 4800rpm.
Cause it was not tuned, it is running very rich and conservative out of the box tune FYI.
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