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996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

4000RPM Stumble

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Old Mar 15, 2008 | 06:12 PM
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4000RPM Stumble
so just got the ECU/exhaust/turbo/wastegate/spark plugs done and when i go WOT it stumbles around 4000RPM. eventually it goes away but its still annoying...

also, when i dont go WOT but go 3/4 of the way, it doesn't do this...

is this my maf going bad again or the programming.
 
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Old Mar 15, 2008 | 06:24 PM
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Hi , Sorry to here this, First check the plugs (gap) sounds to me like under full boost (trq peak) you loosing spark. What is the air/fuels running.
Tim
 
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Old Mar 15, 2008 | 06:37 PM
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Probably plugs. If you're checking the gap, just replace them.
 
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Old Mar 15, 2008 | 06:52 PM
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how many miles on those plugs? put some Denso Iridium 1 step colder in there...
 
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Old Mar 15, 2008 | 06:56 PM
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my car feels like it does the same thing, but at 2000 rpm... it DOESNT happen at wot... under regular driving.. its almost like a misfire ..
 
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Old Mar 15, 2008 | 07:10 PM
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plugs....
.. and hopefully not Apsolute...

markski
 
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Old Mar 15, 2008 | 07:23 PM
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r34dy2walk is infamous around these parts
all the plugs are new?
 
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Old Mar 15, 2008 | 07:24 PM
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r34dy2walk is infamous around these parts
i put in 6 new denso iridiums ik20's?
 
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Old Mar 15, 2008 | 07:25 PM
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Originally Posted by r34dy2walk
all the plugs are new?
Doesnt matter.

change them again- get one colder range... u probably messed one up with the extra boost..
 
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2001 996TT 3.6L and stock ECU
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160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL




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Old Mar 15, 2008 | 07:27 PM
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Didn't you just put in K24/18G's? Did you use the Denso plugs?
 
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Old Mar 15, 2008 | 09:48 PM
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Plugs...I had the same issue tonight, no warning they just die.Did you just do them as you did your upgrade? Also
are you seeing the CEL?
 
Last edited by kilrgt; Mar 15, 2008 at 09:52 PM.
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Old Mar 15, 2008 | 11:42 PM
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Since they are new plugs, try cleaning the MAF. You have several new changes so that makes everything you had done suspect.
 
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Old Mar 16, 2008 | 04:27 AM
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Dan/Markski,

Do you guys have the PN's for the any plugs that are "1 step colder" getting some larger turbo's installed and want to make sure i change these out at the same time.....
 
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Old Mar 16, 2008 | 04:36 AM
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Originally Posted by dxb996tt
Dan/Markski,

Do you guys have the PN's for the any plugs that are "1 step colder" getting some larger turbo's installed and want to make sure i change these out at the same time.....

www.sparkplugs.com

8 - Denso Double platinum
Stock Number: 3245
Part Number: PK20PR-P8
Unit Price: $7.16
 
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2001 996TT 3.6L and stock ECU
9.66 seconds @ 147.76 mph 1/4 mile click to view
160 mph @ 9.77 seconds in 1/4 mile click to view
50% OFF ON PORSCHE ECU TUNING BLACK FRIDAY SPECIAL




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Old Mar 16, 2008 | 05:36 AM
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Mark those are the plugs you use? I am reaching for the 580 RWHP would those be the best for me?
 
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