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Me VS. pullied cobra

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Old May 27, 2011 | 01:35 PM
  #76  
SSlobalt's Avatar
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From: Kathmandu
I'd say buy a new stock HPFP and see if that helps. If they are truly hit or miss, that means some of the cars work with E-85. That means there is a solution somewhere.
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Old May 27, 2011 | 06:29 PM
  #77  
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From: Seattle, WA
Originally Posted by SSlobalt
I'd say buy a new stock HPFP and see if that helps. If they are truly hit or miss, that means some of the cars work with E-85. That means there is a solution somewhere.
It *could* be a low pressure pump issue, too, BUT the log I saw looked like an HPFP issue.

If it is HPFP, you'll see a "flaring" of IDCs in the low to mid RPM range that recovers as the RPMs climb up. This is what I saw in the log.

If it is LPFP, you'll usually see a lean-out condition at high RPM.

It seems to come down to individual cars - I've seen some cars have HPFP issues on gasoline (usually Kappas running 25psi+).
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Old May 27, 2011 | 08:05 PM
  #78  
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corn gas ftw....
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From: tyler, TX
so does the hpfp not keeping up due to higher boost levels?? if so we can drop it some
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Old May 27, 2011 | 08:06 PM
  #79  
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From: Seattle, WA
Originally Posted by ssblackstealth
so does the hpfp not keeping up due to higher boost levels?? if so we can drop it some
Yes, we can either lean it out or reduce the boost level
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Old May 27, 2011 | 08:07 PM
  #80  
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From: somewhere
24psi it seems to run out 22-23 is perfect
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Old May 27, 2011 | 08:09 PM
  #81  
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corn gas ftw....
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From: tyler, TX
i see spikes of 26 on my gauge, but hold 24 on E85 i believe, what would we cut it down to??
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Old May 27, 2011 | 08:11 PM
  #82  
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corn gas ftw....
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From: tyler, TX
Originally Posted by ripped
24psi it seems to run out 22-23 is perfect
yea i guess we can try thinf vince, just keep the boost level the same as my 93oct tune at 23psi and hopefully that will fix her up!
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Old May 28, 2011 | 04:43 PM
  #83  
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From: The Desert
Back off full E85 and run 1:1. You really won't lose much...
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Old May 28, 2011 | 04:57 PM
  #84  
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From: Davie, Fl
2:1
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Old May 28, 2011 | 06:02 PM
  #85  
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From: The Desert
Originally Posted by Super Wagon
Its still a street tune though. I would like to see a cobalt on the dyno having the AFR increased a little at a time to see where the peak is before it stops gaining power. An afr of 14:1 is very lean and seems to be pretty risky at WOT.
Not questioning his abilities, just curious to see for myself as our cars are similar but what works for the cobalt (as of right now) does not work for the speed when it comes to tuning...
You cannot compare the two, LNF vs MZR DI, and their fueling requirements, IMO.

Different head design and different piston design. To my knowledge, the LNF head combustion chamber and the piston design are responsible for the proper mixing of the fuel where as the MZR DI utilizes charge motion valves. I also believe the MZR DI also has higher compression as well.

I myself personally run .88 at the richest point and .90 at the leanest on 1:1
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Old May 28, 2011 | 06:45 PM
  #86  
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From: Davie, Fl
Plus isnt the MS3 using a 2.3L You gotta fill the extra displacement with something(fuel/air)
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Old Jun 5, 2011 | 10:59 PM
  #87  
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From: Tyler Texas
Originally Posted by T-Man
You cannot compare the two, LNF vs MZR DI, and their fueling requirements, IMO.

Different head design and different piston design. To my knowledge, the LNF head combustion chamber and the piston design are responsible for the proper mixing of the fuel where as the MZR DI utilizes charge motion valves. I also believe the MZR DI also has higher compression as well.

I myself personally run .88 at the richest point and .90 at the leanest on 1:1
Thank you!

I know they are different but I wasn't sure in what areas (besides the obvious). So far in my quest to run e85 with the speed3 I haven't turned up very promising results. I'm also running wmi and I think that it takes me to the same point that e85 can take my car. So running both is pointless... I've got some dyno time coming up in July and I'll see for sure then if there is any benifit in running e85 on top of wmi.

Just takes time and money...
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Old Jun 6, 2011 | 06:52 AM
  #88  
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From: Michigan
Originally Posted by Pedobear
man i people are way too nice, i would have had a few more choice words with him if he called my car rice
I'd call your car rice, but it's not a ricer. IMO rice is a term for japanese cars while ricer is for anything stupidly modded.

Originally Posted by ssblackstealth
yea man, it was prettt gay but its whatever, next time we throw down there will be cobra ownage.... that is if i can find a company that makes a better one or get zzp to hurry up with releasing their's..
Hopefully before he throws a bigger blower on

Originally Posted by Erick161
The fact a turbo 4 banger ricer kept up and could possibly beat his blown V8 doesnt say much for his "muscle". Im the biggest blown cobra fan there is...but those guys sometimes where they are gods among men.
It's pretty easy for someone young to get cocky about their car when they throw $1500 in their car and make 450+whp. I wonder if this guy is on the SVT forums, I'll let you know if he posts up about this.
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