Quick question about Gt 500 fuel pump

[Young Stang Owner]

With my setup, do i need a Gt 500 fuel pump?

Kooks longtube headers
2.57 pulley
12% OD
CAI

And for those who don't know i have the M90.

Thanks

[Avaldes]

Read the thread about fuel pressure that AutoX posted and you make the call.

[AutoXRacer]

YES!!!! Especially with the 12% OD!!!!

How much boost are you pushing with that 12% OD?

[NastyStang113]

Yes it'd be a good idea with the 12% OD pulley.

[Young Stang Owner]

So if the 12 % OD were not to be involved here. Would I still need it?

[AutoXRacer]

You could get away without the GT500 fuel setup without the 12% OD and still be within specs for fuel pressure...

How much boost are you pushing with the 12% OD?
What brand and where did you get it?

[Young Stang Owner]

JDM, I believe it is called Innovators West. I don't kno how much PSI yet my car is at the paint shop. I will let u kno asap

[gabrieldy]

the 12% OD balancer JDM sells is the same one Roush installs on the P-51s...not an IW.

[Justin00Stang]

With an OD lower pulley you'll definitely need more fuel than the stock pump can supply. IW makes a 10% and 18% OD that retails for around $440, and there is the roush 12% OD.

[AutoXRacer]

Where is this ROUSH 12% OD pulley everyone keeps talking about? I can't find it on their website...

[Young Stang Owner]

Thats right, didnt notice that til now. Here is a link to the pulley i was refering too.
http://www.teamjdm.com/shop/product_...76&cPath=35_40

So is this the same one they use on the P-51?

[NastyStang113]

It sure doesn't look like what I've got sitting on my bench. The description says it was "designed by JDM".

[Young Stang Owner]

the 12% OD balancer JDM sells is the same one Roush installs on the P-51s...not an IW.

Then which pulley are you refering too if the one from JDM is not the same as the Roush one?
I will probably be going with the 12% OD, thats why i am interested in knowing. Never heard of a Roush on til now.

[NastyStang113]

Where is this ROUSH 12% OD pulley everyone keeps talking about? I can't find it on their website...

If you're going to get a OD crank pulley you should just look into the Innovators West pulley. It's a super nice billet pulley and also SFI approved. Justin/VMP can get both pulleys though.

[gabrieldy]

Then which pulley are you refering too if the one from JDM is not the same as the Roush one?
I will probably be going with the 12% OD, thats why i am interested in knowing. Never heard of a Roush on til now.

I ordered the one from JDM over a year ago and installed it with my M90. Then I ordered my TVS kit and the balancer in the TVS kit and the one I ordered from JDM a year ago were 100% the same.

[AutoXRacer]

I ordered the one from JDM over a year ago and installed it with my M90. Then I ordered my TVS kit and the balancer in the TVS kit and the one I ordered from JDM a year ago were 100% the same.

What did the 12% OD do for you with the M90...?

[gabrieldy]

I installed it the same time as my l/ts and I only remember seeing 1-2 psi. so maybe 2-3 psi w/o the headers?