07 Gt W/mutha Thumprs - Over Revs W/air On -

chgovfk

15 Year Member

Apr 17, 2007

531

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59

AZ

Sep 2, 2014

#1

• Sep 2, 2014

• #1

My 07 GT - has mutha thumprs NSR nstalled new - problem is they 'ramp' up (over rev's high ) when the air is on - I've cleaned the throttle body - the tune is a canned tune from Brenspeed - but they won't 'service' these cams anymore - Has anyone else dealt with this issue?- can I tune this out - I've been trying to configure this - but is it something to do with the WOT setting? etc.. any help would be great -

I don't like to fool with the tuner (I'm a novice) so I put up with it and usually drive w/no A/C .....should I get it professional tuned on a dyno -problem is they usually want you to buy a whole new tuner and tune - I just have this one problem -

it's usually pretty clean when taken apart

 

SpartaPerformance

10 Year Member

Nov 5, 2006

2,517

61

89

Long Island NY

Sep 3, 2014

#2

• Sep 3, 2014

• #2

Its not a mech problem, when ever you turn AC on in any car the computer kicks idle higher to make up from load of the compressor. Needs to be tuned out.

 

chgovfk

15 Year Member

Apr 17, 2007

531

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AZ

Sep 3, 2014

#3

• Sep 3, 2014

• #3

ok thanks - I'll look into that - but do you know what is the tuner designation is for that control?

 

T

Tomh1962

Member

Aug 28, 2014

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Sep 3, 2014

#4

• Sep 3, 2014

• #4

How much of a higher rev is it doing?? More details are gonna be needed to get more accurate responses. It will need a tune with all you done anyway... especially the cams... but how high is it "over-revving"?

 

chgovfk

15 Year Member

Apr 17, 2007

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Sep 3, 2014

#5

• Sep 3, 2014

• #5

thanks Tomh - it has a canned tune - If idle is around 1200 - it jumps up to around 4500 - high sustained rev's (like it's stuck on 4500) - the only way to 'kill' it - is to come to a complete stop - sometimes - I try to double pump the accelerator - and it may 'kick' down - but for the most part it does not - it just jumps up and stays there - I should document it - exact - will have more info tomorrow -

 

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Tomh1962

Member

Aug 28, 2014

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Sep 3, 2014

#6

• Sep 3, 2014

• #6

ok... yes, that's a lot better info to work with... and I agree with Sparta... a good tune, probably a custom tune would be best, might/should clear that up... option B is the AC eliminator pulley...

 

Reactions: chgovfk

chgovfk

15 Year Member

Apr 17, 2007

531

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Sep 4, 2014

#7

• Sep 4, 2014

• #7

Thanks guys - well I just moved to viva Las Vegas like 4 months ago - had to switch out the off-road H-pipe - plus drive it w/a suspended plate - b/c we switched states and insurance to Nevada - then 'pray' that I drove it enough miles to get it to Pass these God awful emissions here in Vegas - no "lee way boy " - really no way to cheat ( this car is driven 'maybe' 2500 miles a year (only has 23k on it) - at least I was smart enough to get (2) two tunes - one w/CO2's on and the cats on - the other - well the other is all out -(It passed) - I know - I could get a high flow catted H-pipe - but I'm too cheap (They are still like $5/7 Hundo) and I love the sound that the open H offers - anyway - I guess I'll have to find a new tuner with a dyno - there is Shelby America - basically down the street - I'll probably post or research a tuner here in town and just spent the big bucks and get it fixed correctly - anyway thanks again for the help - oh a big no on the A/C eliminator - 110 degree's sometimes here

 

Reactions: Tomh1962

T

Tomh1962

Member

Aug 28, 2014

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5

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Sep 4, 2014

#8

• Sep 4, 2014

• #8

chgovfk said:

- anyway thanks again for the help - oh a big no on the A/C eliminator - 110 degree's sometimes here

Click to expand...

LOL... hehhehee... but two windows open at 100 mph works well...

 

Reactions: chgovfk

timjimmy

Active Member

Jul 7, 2013

215

12

29

Clarksville, TN

Sep 6, 2014

#9

• Sep 6, 2014

• #9

In reference to the H pipe, are you running headers?

 

Reactions: chgovfk

chgovfk

15 Year Member

Apr 17, 2007

531

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Sep 8, 2014

#10

• Sep 8, 2014

• #10

-

timjimmy said:

In reference to the H pipe, are you running headers?

Click to expand...

BBK Shorties - H-pipe (straight no Cats ) - to welded in Cherry bombers - they are like the 40 Flows - I love the sound