Bought my first supercharger kit for my 2011 GT

[lovebread]

I think you have a lot more to go before coming close to maxing the stock block.

 

[NickSezz]

So now that I think about it, would going to a 3.0 inch pulley be safe for the car without messing with internals? It's inexpensive and would add like 60 more HP. Why would I NOT do said pulley?

I would talk to Brenspeed about it first. If you were my customer I would advise a 3.25 pulley instead and monitor the MAF signal closely to ensure the stock sensor is not being maxed out in Edelbrock's 95mm hosing. Edelbrock does have an extended range MAF sensor so that may be a possible solution if you want to push close to the 600whp mark. We used combinations like that on 3V cars commonly but never really got into the same game on the Coyotes, although I think it would prove to be a worthwhile setup (3.25 or 3.00 pulley, Edelbrock MAF sensor, tune). Again, even with the MAF in check you now have to make sure your not running out of fuel.

Note: When upping the boost they also may want to pull some timing out of the tune depending on how aggressive it currently is.

Good luck!

 

[bmyles]

What psi is it at with your current pulley?

 

[Quad4_72]

I would talk to Brenspeed about it first. If you were my customer I would advise a 3.25 pulley instead and monitor the MAF signal closely to ensure the stock sensor is not being maxed out in Edelbrock's 95mm hosing. Edelbrock does have an extended range MAF sensor so that may be a possible solution if you want to push close to the 600whp mark. We used combinations like that on 3V cars commonly but never really got into the same game on the Coyotes, although I think it would prove to be a worthwhile setup (3.25 or 3.00 pulley, Edelbrock MAF sensor, tune). Again, even with the MAF in check you now have to make sure your not running out of fuel.

Note: When upping the boost they also may want to pull some timing out of the tune depending on how aggressive it currently is.

Good luck!

Thanks for the advice! I gave them a call and they said to hold on for about two months because they are coming out with a 700 hp kit. He said the upgrade for me will consist of a pulley and belt and they will tune it again for free. So i will just sit tight with what I got for now

 

[Quad4_72]

What psi is it at with your current pulley?

Whenever I got WOT I see my boost go up to 5 psi and thats it

 

[SirJAG]

^ it starts...

 

[NickSezz]

Whenever I got WOT I see my boost go up to 5 psi and thats it

The boost pressure will spike when you nail the throttle and likely climb as the RPMs increase. See what the gauge says at lets say 6500-7000rpms.

 

[Quad4_72]

The boost pressure will spike when you nail the throttle and likely climb as the RPMs increase. See what the gauge says at lets say 6500-7000rpms.

Just gave it a try. It still says 5 PSI

 

[Snakebitten]

I'm pretty sure that the 650 kit has 9 psi.

 

[Quad4_72]

I'm pretty sure that the 650 kit has 9 psi.

I have never had a boost gauge so maybe I am reading it incorrectly.

 

[NickSezz]

You are reading the gauge correctly. ;-) Your high altitude is killing your boost. Less air, less boost pressure. The same goes for hot and cold climate but is not as dramatic of a change as your 6000ft elevation. 8-9 psi at sea level will be about 5-6 psi at 6000ft.

 

[Quad4_72]

You are reading the gauge correctly. ;-) Your high altitude is killing your boost. Less air, less boost pressure. The same goes for hot and cold climate but is not as dramatic of a change as your 6000ft elevation. 8-9 psi at sea level will be about 5-6 psi at 6000ft.

Grrr. Such a huge difference. Oh well. Next time I move to a lower altitude I am sure I will be pleased. Free horsepower

 

[REDS197]

Welcome to Denver! Just get 2 sizes smaller pulley like we all do to compensate for the altitude.

 

[Quad4_72]

Welcome to Denver! Just get 2 sizes smaller pulley like we all do to compensate for the altitude.

I would, but where would I get the tune at?

 

[matt5058]

I would, but where would I get the tune at?

http://rmcrperformance.com/

 

[TEG-84]

I would, but where would I get the tune at?

I would HIGHLY recommend RWR in Littleton, CO over Revolution Performance or any shop in the Springs. If you notice, they are more imports as RWR is more domestic (Mostly Mustangs...Also, AED works closely with Rob). Not to mention Rob and his crew are great guys! I cannot speak for RMCR as I hadnt heard much about them.

http://www.rwrmotorsports.com/

 

[REDS197]

I would, but where would I get the tune at?

RWR is good. I would talk to Brenspeed first. If its tuned for 9 psi and you are only making 5 I bet the tune is fine to pulley down.

 

[Quad4_72]

Thanks for the info! I guess I misspoke a bit with my previous question. I meant to ask how much would the tune be? Brenspeed will do a tune for free if I just wait and buy the pulley from them. If I get the pulley now and have say Underpressure tune it, they charge 550 dollars.

 

[Quad4_72]

I went ahead and just called. RMCR costs $440, UPP is $550, and RWR is $640. As much as I want to get a smaller pulley now, I will just wait and have Brenspeed do it for free when they come out with theirs.

 

[Scott8583]

Can't you buy a Edelbrock pulley from Brenspeed & have them adjust the tune? Doesn't Edelbrock make 2.75 to 3.50+ pullies?