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Discussion Starter · #1 ·
OK so I have a 2005 gt as far as I know car is stock except for M90 super charger, Kenny Bell boost pump, and tune.

What octane should I be running. I just bought the car a week ago tomorrow.

Also it came with an SCT X3 is there away to tell who tuned it?
 

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Premium for a top tier fuel.
If it has the VMP 500 kit (I think you mentioned it in an earlier thread) it's probably tuned by them. And yes they are very good.


Pick your poison.
 

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Discussion Starter · #3 ·
Not sure what the VMP 500 is. only 500 I know is Shaker 500 LOL. I know the M90 was done by a Roush For Dealer could they have done the tune?
 

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Discussion Starter · #5 ·
Hmm so I did. I just copied and pasted that from the auto trader add. I will have to contact them and see what I can find out. LOL
 

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No worries. Let us know if you have any more questions.


Pick your poison.
 

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Discussion Starter · #7 ·
I emailed them. maybe I will know something tomorrow.


as for gas wasn't sure on mid or super. didn't want to pay for super if there was no benefit. It is my DD
 

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If your running a blower you should run at least 91 octane, better with 92 if you can get it. Combustion temperatures always go up with a blower, even low boost requires premium fuel.
I'm running a Kenne Bell 2.4 L blower on my '05 GT and de-tuned it to 400 RWH at 10 PSI of boost to keep the stock crank and rods inside the motor. Still a very fun ride...
 

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Discussion Starter · #9 ·
Thanks for the replies. I emailed VMP but they can't tell me anything so guess when I am ready to do something I will just have to try and identify what I currently have.

Recon, I now see that my SCT has VMPTuning.com on the bottom of it LOL.
 

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You never want to cheap out on something that can in turn make you spend even more in the future. You need to run it more for safety than anything. You might not feel any power gains but it burns much better and can protect your motor.
 

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Discussion Starter · #11 ·
That's what I was wondering. I knew the cheapy stuff was out but wasn't sure from there.
 

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a stupid question is one that is never asked. 91-93 octane is what is normally run once you start talking about tunes and superchargers.
 

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Discussion Starter · #13 ·
trying to see if anyone local sells 93. I see a lot about 93 tunes, if I find 93 do I need a different tune?
 

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Thanks for the replies. I emailed VMP but they can't tell me anything so guess when I am ready to do something I will just have to try and identify what I currently have.

Recon, I now see that my SCT has VMPTuning.com on the bottom of it LOL.
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I would contact VMP, give them your VIN, & any #'s off the ECM.
They should be able to tell you all about your tune.
.
 
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