LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Dyno numbers sucked butt....

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Old May 17, 2004 | 07:32 AM
  #16  
a mean 94z's Avatar
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I dynoed 232/286 bone stock, I have an extremely bad ignition problem....
Old May 17, 2004 | 08:46 AM
  #17  
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so pasky when are you gonna get it fixed and dynoed again... im all excited i need to get an idea of what my car is gonna do when i get my hedaers and a few other things on
Old May 17, 2004 | 10:11 AM
  #18  
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Originally posted by cndctrdj
i dynoed 275 with just intake and exhaust
Every car is different, and dyno numbers can be misleading.

Get it to the track.
Old May 17, 2004 | 11:29 AM
  #19  
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Originally posted by cndctrdj
so pasky when are you gonna get it fixed and dynoed again... im all excited i need to get an idea of what my car is gonna do when i get my hedaers and a few other things on
Everything is fixed, im about to take it to the body shop to get painted before I decide to dyno again. Im driving around with no carpet and center console . The bodyshop im going to is going to paint it black, put new carpet I already have, and my two nice leather racing bucket seats. So i'll see what happens, I have a feeling i'll definatley get 280+ this time. She did me proud last night with that z28 . Thanks guys.
Old May 17, 2004 | 01:12 PM
  #20  
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i dynoed 256hp/295torque with just SLP CAI and catback......since then i have put a 160 in with dual fan switches...mac mid headers and 2.5" high flow y pipe and a tranny cooler..all the free mods (TB bypass/descreened MAF etc..) and turned up the pressure a little in the 60E..i think i'll be around 300 now..what do u guys think?
Old May 17, 2004 | 07:48 PM
  #21  
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Originally posted by 94zLT1
i dynoed 256hp/295torque with just SLP CAI and catback......since then i have put a 160 in with dual fan switches...mac mid headers and 2.5" high flow y pipe and a tranny cooler..all the free mods (TB bypass/descreened MAF etc..) and turned up the pressure a little in the 60E..i think i'll be around 300 now..what do u guys think?
I think you're being optimistic.
Old May 17, 2004 | 08:03 PM
  #22  
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Originally posted by Patman
I just dynoed this weekend and pulled 254rwhp with just an SLP 2OTL catback and the stock tuning, and my car is auto. After Vince McCauley did the tuning, he got it to 265rwhp (and bumped up my torque by 30ft lbs in the midrange!!).

I totally did not expect it to be as strong as it was stock, I figured it would've been 240, even with the catback. Although it had an air leak at the intake elbow which caused it to run lean (14:1) so that's why my car has always run such strong quarter mile times for stock. It's going to run even stronger now though!
14:1 is rich, not lean
Old May 17, 2004 | 08:25 PM
  #23  
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Originally posted by 94zLT1
i dynoed 256hp/295torque with just SLP CAI and catback......since then i have put a 160 in with dual fan switches...mac mid headers and 2.5" high flow y pipe and a tranny cooler..all the free mods (TB bypass/descreened MAF etc..) and turned up the pressure a little in the 60E..i think i'll be around 300 now..what do u guys think?
I also think that's optimistic.

Looks like we have very similar setups, but I'm a M6. If I were you, I wouldn't look to make much more rwhp than what's in my sig, especially considering you are an A4. BTW, I also have the TB Bypass and Descreened MAF.

Dan
Old May 17, 2004 | 08:27 PM
  #24  
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Originally posted by DarkZ711
14:1 is rich, not lean
Actually, it's lean.

Most guys try to stay around 13:1

Remember, it's the AIR:FUEL ratio.

Dan

Last edited by stereomandan; May 17, 2004 at 08:29 PM.
Old May 17, 2004 | 09:01 PM
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i thought the Stoicheometric Air: Fuel ratio was 14.7:1? If he's running 14:1, less air per fuel, so it's rich right? I could be wrong tho. I'm only a newbie. Anyway, I hope ya get everything straightened up Pasky. Can't wait to see that thing, if we can ever get a Texas area thirdgen meet!
Old May 17, 2004 | 09:41 PM
  #26  
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Its definatley fixed, no way I could have beaten that Ls1 from a roll with 234 rwhp, once it is out of the paint shop i'll go dyno again and hopefully see what I expected.
Old May 17, 2004 | 09:45 PM
  #27  
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Originally posted by tamatt27
i thought the Stoicheometric Air: Fuel ratio was 14.7:1? If he's running 14:1, less air per fuel, so it's rich right? I could be wrong tho. I'm only a newbie. Anyway, I hope ya get everything straightened up Pasky. Can't wait to see that thing, if we can ever get a Texas area thirdgen meet!
Yes, stoicheometric is 14.7:1, but that's not what's used at Wide Open Throttle.

I think the stoicheometric a/f is only used at idle and partial throttle.

Dan
Old May 18, 2004 | 03:30 PM
  #28  
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Originally posted by DarkZ711
14:1 is rich, not lean
I thought 14.1:1 was rich too?
Old May 18, 2004 | 03:57 PM
  #29  
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Originally posted by a mean 94z
I thought 14.1:1 was rich too?

Man..... Its lean! 14.7 is perfect A/F ratio for BURNING not power, you won't make any power at 14.7:1 A/F & you will prolly lean out & blow something up, good A/F at WOT is around 12.5-13.1 depending on mods & cam etc.... That also varies, try keeping her richer in the peak TQ band & lean out at top end, no more then 13.1 though, well sometimes you might make more power going leaner but thats ussually not the case or just not worth it.
Old May 18, 2004 | 09:26 PM
  #30  
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I stand corrected....



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