Tuning with Meth question

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Jul 4, 2008 | 05:36 PM

PUREFUN

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Melting Slicks

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From: Las Vegas Nevada

St. Jude Donor '07-'08

Tuning with Meth question

My Vette was tuned for meth. Couple of days ago i go went with a 50% meth and with 50% distilled water. Noticed now when starting the car when it's cold it runs terrible until it gets warmed up. Has anybody else experience this problem?

Jul 4, 2008 | 06:41 PM

vegasredz062

Melting Slicks

Joined: Feb 2006

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From: LAS VEGAS NV

St. Jude Donor '08

Quote:

Originally Posted by PUREFUN

Not sure the Meth has anything to do with start up? you only use meth when you go into boost?

unless you have meth leaking into the throttle body?

Jul 4, 2008 | 06:59 PM

0Jeff @ TPE

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From: Las Vegas NV

St. Jude Donor '06 & '12

I agree with Sam...

Your meth system has absolutely ZERO to do with startup. Heck, it doesnt even activate until your into boost..

So its either a:

Mechanical issue
Tune issue
Leaking check valve issue

Or possibly your PAC controller on your meth system went bad, but i've never heard of that causing your problem..

I sounds like maybe your car is not responding to the EXTREME heat we've been having, and needs a little tweaking in the tune.

Jul 4, 2008 | 07:47 PM

PUREFUN

Thread Starter

Melting Slicks

Joined: Nov 2004

Posts: 3,424

Likes: 0

From: Las Vegas Nevada

St. Jude Donor '07-'08

Quote:

Originally Posted by vegasredz062

Not sure the Meth has anything to do with start up? you only use meth when you go into boost?

unless you have meth leaking into the throttle body?

Quote:

Originally Posted by American_HP@Total Perf

I agree with Sam...

Your meth system has absolutely ZERO to do with startup. Heck, it doesnt even activate until your into boost..

So its either a:

Mechanical issue
Tune issue
Leaking check valve issue

Did the same thing last year when i added Torco. Seemed when i stopped using the Torco the problem went away. Yet with the Torco the issue was alot worse. It would run like it was running out of fuel or like it was running on one cyclinder than two three four etc. Until after a minute it would run fine. Thought it was weird because it started after i diluted the meth mixture. Sounds maybe like Jeff says the heat is playing a part in it. When it was much hotter out it seemed fine. But it has been sitting in the HOTgarage the last couple of days. Checked for codes and none where thrown. Thanks guys. Going to need to get the PCM unlocked before i can do the tune.

Thanks Sam & Jeff Dell

Last edited by PUREFUN; Jul 4, 2008 at 07:52 PM.

Jul 4, 2008 | 07:57 PM

PUREFUN

Thread Starter

Melting Slicks

Joined: Nov 2004

Posts: 3,424

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From: Las Vegas Nevada

St. Jude Donor '07-'08

When i drove it today i put about 20 miles on it just seeing if it would run without any problems except for the starting issues. All was fine.

Just went out into the garage after having it sit for about a hour and a half and it started fine. So definitely sounds like heat issues and a retune.

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