Pulsing 3rd gear at 90+ mph

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Feb 11, 2008 | 02:47 PM

#26

firestorm

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From: Edmonton

modified, didnt Doc stick up a stock one too? he wouldnt lie, hes a god.

Feb 11, 2008 | 02:48 PM

#27

Super_SS

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From: N. Side Chi-Town

Quote:

Originally Posted by shaunmcdee

Were going to try everything to get it fixed tomorrow, since hell be coming down. Were going to go thru a process of elimination, and will inform you all of tomorrows outcome.

my surge was around 95-100mph...and it would feel like if i let go of the gas on purpose and slame the gas again...was starting to **** me off

Feb 11, 2008 | 02:50 PM

#28

jimbos'ss

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From: Killeen,TX

Quote:

Originally Posted by firestorm

modified, didnt Doc stick up a stock one too? he wouldnt lie, hes a god.

i don't know, when i get home i'll check to see if he posted one.

Feb 11, 2008 | 02:51 PM

#29

shaunmcdee

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From: Rialto, Ca

Quote:

Originally Posted by Super_SS

my surge was around 95-100mph...and it would feel like if i let go of the gas on purpose and slame the gas again...was starting to **** me off

ya that sounds familair, well give it a shot. If your right youll be the first person ill let know.

Feb 11, 2008 | 02:51 PM

#30

jimbos'ss

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From: Killeen,TX

Quote:

Originally Posted by thedubsack85

i know he is running California 91 **** water..

QFT!!!!!!!!!

Feb 11, 2008 | 02:54 PM

#31

shaunmcdee

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From: Rialto, Ca

Quote:

Originally Posted by thedubsack85

i know he is running California 91 **** water.. maybe the 2 step colder is alittle to cold? i mean **** i see so many people doing the stage 2 with 2.9 on the factory plug's.. and the colder step plug's is to help knock right? he need's to log it when it happen's so we can really see what's going on..
and BTW steven i saw you at the downey yesturday. i was with my grandma.. and i noticed somthing while leaving.. you got a sick ass hood on your car.

If youve seen the log, then youll see the surging. Its there in plain view. frame 1000 and over. I didnt just have him attach a log of him idling, lol

Feb 11, 2008 | 03:01 PM

#32

Area47

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From: Still fixing others mistakes.

start from scratch. i have an 06 or 07 stage 2 map. remove all adders in terms of timing. afr adder. ect adder below 210 degree's. iat adder below 140.

leave the fuel, and the timing stock stage 2. then try it again.

something is goofy and it's most likely something simple you're overlooking

Feb 11, 2008 | 03:07 PM

#33

shaunmcdee

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From: Rialto, Ca

Quote:

Originally Posted by Area47

Will do sir, Hopefully its tune related and not mecahnical. Thanks for the help.

Feb 11, 2008 | 03:12 PM

#34

thedubsack85

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From: california

Quote:

Originally Posted by shaunmcdee

Will do sir, Hopefully its tune related and not mecahnical. Thanks for the help.

if it was mechanical there would be a problem in every gear right??

Feb 11, 2008 | 03:18 PM

#35

shaunmcdee

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From: Rialto, Ca

Quote:

Originally Posted by RN11'S

If hes still running a stage 2 map, then what did you actually do?? What was the point of "tuning" him if you didnt mess with the A/F ratio or timing??

I instaled his 2.9 and 42 lbs injectors. We had decided to run the stage 2 tune. Also upon flashing the tune i have to take out a few degrees of knock. I dont know what u consider "tuning". But that falls in the catergory in my book, unless you want to get technical and tell me i was "flashing" in which case, ok, ill give that to you. But then again, you didnt really contribute to the thread

So thats about as far as that convo goes.

Quote:

Originally Posted by thedubsack85

if it was mechanical there would be a problem in every gear right??

Not entirely true. my car used to get spark blow out only in 3rd gear when i tried to lean out the tune. But in second gear the car pulled just fine. If it was mechanical, or even if it was based off the "tune" it doesnt ALWAYS have to happen in every gear.

Last edited by shaunmcdee; Feb 11, 2008 at 03:26 PM. Reason: Automerged Doublepost

Feb 11, 2008 | 03:18 PM

#36

Area47

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From: Still fixing others mistakes.

Quote:

Originally Posted by jimbos'ss

QFT!!!!!!!!!

i run 91 octane all the time

i don't see a problem with it

Feb 11, 2008 | 03:20 PM

#37

shaunmcdee

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From: Rialto, Ca

HAHA, water injection ftw!

Feb 12, 2008 | 02:42 AM

#38

Steven Flit

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From: Los Angeles, CA

kk... to clear things up a bit...

Every gear runs like a champ, except the top of 3rd. Once I hit 90mph in 3rd gear, roughly 6k on the tach, it begins to pulse until I shift it into 4th.

Quote:

Originally Posted by thedubsack85

thanx man!

Last edited by Steven Flit; Feb 12, 2008 at 02:42 AM. Reason: Automerged Doublepost

Feb 12, 2008 | 04:56 PM

#39

Steven Flit

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From: Los Angeles, CA

Problem solved folks

Cleaned the MAF and replaced the stock filter. It had 17,000 miles on it.

Shaun and I first put in the stock spark plugs. And were still getting the pulsing at 90+ mph in third.

Once we replaced the filter and carb cleaner on the maf, the problem was solved.

Tonight we're going out to do a final tune on the car; decided to just keep the stock sparks on.

thanks for all your help guys