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Sep 23, 2009, 05:42 AM
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#1
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Cuts out at only at WOT
Ive been searching and searching to find a solution, but I havent found anyone that had the exact same issue yet.
The car runs great, doesnt miss a beat until you go WOT. As soon as it builds 10psi the car cuts (not sure if its fuel or boost). It car build more than 10psi of boost part throttle without breaking up and cutting out.
I did gap and replace the spark plugs. I did check all my clamp to make sure they were tight. I replaced the wastegate lines.
Im not sure what it is...I wondering if anyone can shed some light on this issue. I feel like I might be missing something obvious here 
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Sep 23, 2009, 05:59 AM
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#2
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Evolved Member
Personal Sales Rating: ( 15)
Join Date: Oct 2007
Location: SoCal/MS
Posts: 628
Drives: evo8MR + subi RS +08 Lancer
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lower ur spark plug gap... wat is it at now? i wouldnt go lower than .022 if ur already that low. other than that i cant think of anything else it could be really, assuming ur tuned by a pro
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Lots o' bolt on's... suspension, brakes, motor
327awhp/304awtq est. DLL @ roughly 23psi
New time:
12.13@113_____stock block, head, turbo... 6speed
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Sep 23, 2009, 06:14 AM
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#3
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Quote:
Originally Posted by kanyonkid
lower ur spark plug gap... wat is it at now? i wouldnt go lower than .022 if ur already that low. other than that i cant think of anything else it could be really, assuming ur tuned by a pro
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Thanks for the reply,
I have them gapped at .027 I will definately start by gapping them down. I would hate to go to the dyno tomm. like this, but maybe its something a tune could fix.
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Sep 23, 2009, 06:39 AM
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#4
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Evolved Member
Personal Sales Rating: ( 26)
Join Date: Aug 2005
Location: Where the streets have no name
Posts: 4,058
Drives: 03 TB VIII
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Did you boost leak test the car?
Do you have a Wideband in the car? If so what does it show at WOT?
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4WS TUNED VIII
Quote:
Originally Posted by Evoryder
Its' the turbo punching out for the day
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Sep 23, 2009, 06:48 AM
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#5
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Evolved Member
Personal Sales Rating: ( 9)
Join Date: Aug 2005
Location: NJ
Posts: 850
Drives: 05 GSR & K8 GSX-R600
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Is the car sputtering when you reach this threshold??? I had a similiar situation and I ended up replacing my ignition coils & wires with a newer set and it did the trick.
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Sep 23, 2009, 06:57 AM
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#6
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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I do have a wideband, but it cuts out so quickly its hard to say what the A/F is.
I did not boost leak test the car yet, b/c I figured if I can build 17psi at 3/4 throttle, then Im not bleeding off boost. Then again I could be wrong...
Last edited by BulletProof; Sep 23, 2009 at 07:02 AM.
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Sep 23, 2009, 07:01 AM
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#7
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Quote:
Originally Posted by CAD EVO
Is the car sputtering when you reach this threshold??? I had a similiar situation and I ended up replacing my ignition coils & wires with a newer set and it did the trick.
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This feels like fuel/boost cut. Did yours only do it @ WOT? This is the only time it does. Its not sputtering or missing, it simply just cut all power.
Car's mods are TBE and intake. The car was "street tuned" by the previous owner, so Im unsure of the quality of tune I have a date tomm. to have it dyno tuned, Id just hate to show up like this...
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Sep 23, 2009, 08:09 AM
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#8
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Tried gapping the plugs down to .024-025 and nothing changed. Its definately some kind of fuel/boost cut thats happening ONLY @ WOT.
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Sep 23, 2009, 08:10 AM
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#9
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Evolving Member
Personal Sales Rating: ( 1)
Join Date: Oct 2007
Location: Connecticut / Massachusetts
Posts: 236
Drives: FP Black Powered 2004 Mitsubishi Evolution VIII SSL
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Your hitting boost cut. Up the boost cut in your ROM with ecuflash and you should be all set.
-Bink
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New Setup: FP Black
--------------------------------
Original Setup:
341 WHP @ 5948
341 WTQ @ 4698
VDR 5.6 - EvoM mode
Stock VIII Turbo @ 27 PSI
12.81 @ 107.7
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Sep 23, 2009, 09:10 AM
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#10
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Evolving Member
Personal Sales Rating: ( 0)
Join Date: Jan 2009
Location: Maryland
Posts: 144
Drives: 2006 Evo SE-SSL, 2001 Eclipse, 05 Mustang GT
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I had this happen before, did you put new stock plugs back in?
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Sep 23, 2009, 09:16 AM
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#11
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Quote:
Originally Posted by brsox10288
i had this happen before, did you put new stock plugs back in?
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ngk bpr7es
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Sep 23, 2009, 09:35 AM
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#12
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Evolved Member
Personal Sales Rating: ( 27)
Join Date: Nov 2003
Location: Schaumburg, IL
Posts: 2,073
Drives: 05 WW EVO RS
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what mods? car was running fine before?
check your MBC, do a boost leak.
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05 RS....Powered by Big Turbo, 2.0 build in progress /// APM RACiNG
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Sep 23, 2009, 01:12 PM
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#13
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Evolved Member
Personal Sales Rating: ( 7)
Join Date: Jul 2005
Location: Stamford, CT
Posts: 904
Drives: a stock EVO, a rarity amongst all
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how many miles on your ignition coils & wires? Might explain why it's breaking up under WOT. . .or maybe your local gas station isn't giving you "true" 93? Could retard timing because of that. . .
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Driving an unconventionally fast car with unconventionally functional styling. . .
"Sleeper Tarmac Black". IVEY tuned September 2007:325awhp/345awtq-Dynojet
"If you haven't driven an Evo, it's hard to explain why this car evokes feelings of utter lust; the driving experience is simply that pure" Road and Track, Feb 2005 Long term test
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Sep 24, 2009, 09:08 AM
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#14
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Quote:
Originally Posted by shivaswrath
how many miles on your ignition coils & wires? Might explain why it's breaking up under WOT. . .or maybe your local gas station isn't giving you "true" 93? Could retard timing because of that. . .
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The car is not breaking up. It's not ignition related bc it simply cuts.
It does not spit, sputter, misfire, ect...When I go WOT and it build about 10psi, it hits a brick wall.
I already put different gas in from another gas station. Still the same thing.
Im taking the car to Shane @ DB Tuning this afternoon, hopefully we can sort it out. Ill report back then.
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Sep 25, 2009, 05:47 AM
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#15
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Newbie
Personal Sales Rating: ( 1)
Join Date: Apr 2009
Location: Twin Cities, MN
Posts: 13
Drives: 03 TB Evo VIII, 89 Buick Century
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Well I figured it out...the NO LIFT to SHIFT was engaging when I would go WOT. I had recently adjusted my clutch so it must of messed with how it was set. Car works perfect and made 242whp & 232tq on 22psi on a Dynamic Dynameter.
Last edited by BulletProof; Sep 25, 2009 at 11:19 AM.
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Tags
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10psi, 95, close, cuts, cutting, eclipse, engine, evo, mustang, plugs, spark, sputters, wot  |
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