2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

At the track with stock turbo...

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Old Oct 17, 2010 | 03:11 PM
  #76  
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From: Grand Rapids, MI
Originally Posted by Iam Broke
My injector ms went to about 12 ms and it started breaking up a bit with a .90 PE lambda, When it got to 6500 in third and I let off it popped a CEL & limp mode for low fuel rail pressure. That was on E85 running 24 psi boost and 23* advance with the stock tranny ratio. My actual lambda showed .93 from the wideband during that pull. I was running the Trifecta base file with 2700 psi pressure >160% load.

I figured I couldn't get enough fuel into the DI window and backed off to 50% ethanol after that.

Here's a link to the post on HPTuners... I'm flowing 31 lb/min VE when this happened.

HP Tuners Bulletin Board - View Single Post - LNF Ethanol experiment
What you are describing sounds like you were not at 2700 psi, though. That would be a different issue. You might need to address the in-tank pump if it is not keeping up. It would be interesting to put a pressure sensor on the inlet of the mechanical pump to see if the in-tank pump can keep up. Your mechanical pump should be able to support 35%+ IDC at 2800 psi.
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Old Oct 17, 2010 | 03:21 PM
  #77  
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From: Dark side of the Moon
I will try it again since you have proven success. I've requested a 2800 psi base file, hopefully that will do it. I may need to replace the line from the cam driven pump to the rail as it has been reconnected once repairing an oil leak and may be pinched down too far to flow enough. Thank you for your input.

Does yours start ok cold? I tried advancing the timing 6* during cranking but it still took two key cycles to start on E85.
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Old Oct 17, 2010 | 03:47 PM
  #78  
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I have not noticed any starting issues yet, but it hasn't been that cold. When it gets real cold, E85 cars will start harder, regardless of tune. I am under the impression that gas stations in northern states switch over to E70 through the winter months. Hopefully they don't do that before I am done tuning and racing for the year.
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Old Oct 17, 2010 | 03:56 PM
  #79  
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Actually, mine got harder to start when it dropped into the 50's here. Two key cycles and it will fire up ok, like it needs a double prime.

Stations begin the switch in October for the winter months. You may be at 70% already depending on how recent your station got a load. I could run 70% fine in warmer temps. My MAF freq calibration shifted +33% positive on E85 so you can gauge by that.( X 1.33 across the board to get the trims in line.) E48 is a +14% shift.
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Old Oct 17, 2010 | 04:31 PM
  #80  
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Ugh, wish my area had E85.
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Old Oct 17, 2010 | 04:33 PM
  #81  
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Awesome! Congrats!

What does the ZZP Transmission consist of?
and
LNF Cams????? I'm sooooo interested.
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Old Oct 17, 2010 | 04:39 PM
  #82  
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Originally Posted by Matt M
I have not noticed any starting issues yet, but it hasn't been that cold. When it gets real cold, E85 cars will start harder, regardless of tune. I am under the impression that gas stations in northern states switch over to E70 through the winter months. Hopefully they don't do that before I am done tuning and racing for the year.
Go get a few 5 gallon cans to have around lol. And if its at E70 now and it picked up like that I cant wait to see it on true E85.
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Old Oct 17, 2010 | 04:43 PM
  #83  
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so whats the fastest stock turbo neon SRT4 time again? 11.82 right?
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Old Oct 17, 2010 | 04:50 PM
  #84  
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From: Grand Rapids, MI
Originally Posted by JPizzle
Awesome! Congrats!

What does the ZZP Transmission consist of?
and
LNF Cams????? I'm sooooo interested.
We do a few mods for better engagement and switch to a 4.45 final drive.
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Old Oct 17, 2010 | 04:52 PM
  #85  
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Originally Posted by cmiller8006
Go get a few 5 gallon cans to have around lol. And if its at E70 now and it picked up like that I cant wait to see it on true E85.
Based on the tune, I'm sure I have E85 in right now. I filled a can yesterday and brought it to the track, but I did not need to add any. I guess I will find out soon if it has been switched.
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Old Oct 17, 2010 | 04:54 PM
  #86  
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Originally Posted by drewbroo
so whats the fastest stock turbo neon SRT4 time again? 11.82 right?
I think it is something right around there. That was the main goal for yesterday.
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Old Oct 17, 2010 | 04:58 PM
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So I guess its safe to say that you set the record for the fastest stock turbo 4 cylinder fwd car then.
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Old Oct 17, 2010 | 04:58 PM
  #88  
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Congrats matt! Thats impressive.

If your guys' stations are like most E85 stations you SHOULD be on the fall blend right now as of about September 15 or so which is ~E78. If that is the case I wouldnt be surprised if you pick up more power when the summer blend of E85 comes back...but I also wouldnt be surprised if you run out of fuel on 85% ethanol either
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Old Oct 17, 2010 | 05:06 PM
  #89  
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Originally Posted by drewbroo
so whats the fastest stock turbo neon SRT4 time again? 11.82 right?
Yep.

Originally Posted by drewbroo
So I guess its safe to say that you set the record for the fastest stock turbo 4 cylinder fwd car then.
Yep. lol Unless there is a talon or something fwd that did it back in the day.

Last edited by cmiller8006; Oct 17, 2010 at 05:07 PM. Reason: Automerged Doublepost
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Old Oct 17, 2010 | 05:07 PM
  #90  
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Originally Posted by drewbroo
so whats the fastest stock turbo neon SRT4 time again? 11.82 right?
Fastest I've heard of was 11.56 @ 121.


The little Srt turbo cant compete with the K04 of the Cobalt so he was using nitrous. Still a modded Stock turbo car.

Performance Mods:
Stage 1
94 Octane mixed with 110
Stock Ported Turbo @ 19-20psi AGP Wastegate
75 shot NX wet nitrous system, 10lb bottle w/ MSD digital window switch
255 Walbro pump
Tial BOV
AEM Ram Air Intake w/ K&N Filter
DASMopar Map Clamp
Big Intercooler
180 Thermostat
Maxxfab 3in Full exhaust with Side Exit
Ported stock intake manifold and ported throttle body
AGP solid motor mounts
ACT 6-puck sprung clutch
24.5x8.5 M&H Slicks w/ Skinnies on the back

http://s121.photobucket.com/albums/o...t=MOV01616.flv

Last edited by Perfect.disguise; Oct 17, 2010 at 06:09 PM.
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Old Oct 17, 2010 | 05:23 PM
  #91  
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I'm would like to run straight e85 I'm on a mix right now
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Old Oct 17, 2010 | 06:02 PM
  #92  
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That is certainly moving guys, and excellent power numbers as well!!

Are you revving over 7K with the valvetrain swapped or still no point?
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Old Oct 17, 2010 | 06:20 PM
  #93  
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Originally Posted by Perfect.disguise
Fastest I've heard of was 11.56 @ 121.


The little Srt turbo cant compete with the K04 of the Cobalt so he was using nitrous. Still a modded Stock turbo car.

Performance Mods:
Stage 1
94 Octane mixed with 110
Stock Ported Turbo @ 19-20psi AGP Wastegate
75 shot NX wet nitrous system, 10lb bottle w/ MSD digital window switch
255 Walbro pump
Tial BOV
AEM Ram Air Intake w/ K&N Filter
DASMopar Map Clamp
Big Intercooler
180 Thermostat
Maxxfab 3in Full exhaust with Side Exit
Ported stock intake manifold and ported throttle body
AGP solid motor mounts
ACT 6-puck sprung clutch
24.5x8.5 M&H Slicks w/ Skinnies on the back
75shot, eh?
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Old Oct 17, 2010 | 06:29 PM
  #94  
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Yep, on a peak of 19/20psi. I wish my SS/SC trapped 121 when it had a 75 shot. ..
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Old Oct 17, 2010 | 06:47 PM
  #95  
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nice times matt
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Old Oct 17, 2010 | 06:47 PM
  #96  
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lulz at "Stock" ported turbo i think the better way to word that would be .. ported stock turbo lol.. so he's not on the "stock turbo" but according to an srt4 owner thats stock lol
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Old Oct 17, 2010 | 06:49 PM
  #97  
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That srt pictured was with nitrous. We generally dont count that, and neither does the neon world. 11.82 is the fastest srt 4 stock turbo time. I am in this video on the phone.

YouTube - Nick (Wehewon) Stock Turbo Record 11.82@116
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Old Oct 17, 2010 | 06:53 PM
  #98  
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Look at it how ever you want, I could care less. Just posting the fastest non turbo swapped Srt I've heard of.
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Old Oct 17, 2010 | 06:55 PM
  #99  
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well then imagine what matt could run if he had a 75 shot too!
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Old Oct 17, 2010 | 07:00 PM
  #100  
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Originally Posted by RooTBeeR
well then imagine what matt could run if he had a 75 shot too!
Could he on that set up?
Anyways the Stock turbo times aren't the Srt-4s strong point alot have trouble reaching much over 300whp. Again just posting fastest non swapped Srt-4 I've heard of.
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