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Help with ATI #s

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Old Jul 11, 2002 | 06:22 PM
  #1  
ls1formula99's Avatar
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Joined: Dec 2001
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From: michigan
Default Help with ATI #s

I just finished with the install of my ati kit and went to the dyno, at witch I had higher expectations. I have the following mods, mac headers & orp, flowmaster catback, slp mass air, ported tb, hot cam and 42lb injectors. I was running the 3.40 pulley wich I thought was the 7lb and the car only made 4lbs. I was told and understood that this has to do with loosing pressure due to the cam and headers? The car made 440rwhp and 406rwtq. My question is then is this normal to see that much of a drop in boost, and if so how are those numbers for the amount of boost I made? I was concerned with the tq numbers being a little low. Just swaped out the 3.4 for the 3.0 and will retune fri. Sorry so long , any input or #s would be great. Thanks
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Old Jul 11, 2002 | 06:28 PM
  #2  
Blackbird's Avatar
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Joined: Nov 2001
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From: Bellevue, Wa
Default Re: Help with ATI #s

tq seems low.

lets see your graph with the a/f and your datalogging numbers.

without those we can't diagnose it.
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Old Jul 11, 2002 | 06:35 PM
  #3  
MelloYellow's Avatar
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Joined: Nov 2001
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From: Centrifugal City
Default Re: Help with ATI #s

Wow, you skipped the 3.20" and went from 3.4 -> 3.0?

Let us know how it works out. Ditto above, watch the fuel.
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Old Jul 12, 2002 | 12:11 AM
  #4  
TheBeet's Avatar
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From: Dallas, Tx
Default Re: Help with ATI #s

Ya'll are gonna have problems! That <img border="0" alt="[guns]" title="" src="graemlins/gr_guns.gif" /> 6rib system is ****! I pulled 550rwhp and 503rwt with the 3.20 pulley one time , the belt started to slip and go to **** after that one dyno pull. Find yourself a cogg system for your car. I'm talking with RPM Outlet as we speak,their working on a new cogg setup for the ATI blower.Or go with a 4.00 pulley to minimize slippage and throw some juice on it! My mods below:
Rebuilt motor with forged rods and pistons(10:1)
GWP Stage 2 ATI blower (3.20 pulley)
GWP blower cam
Stock intake & heads
Custom fuel system By <img border="0" alt="[hail]" title="" src="graemlins/gr_hail.gif" /> Sean Freese(Dallas TX.)
Moser 12 bolt
Stage 4 Star clutch
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