03/04 Cobra Questions

[Slick_89_Hatch]

Hey guys,

Just helping out a friend who is doing some mods on his Termi.

What are the limits of the stock 39lb injectors and fuel pumps? When are upgrades like MAF and BAP needed?
Also, what are the limits of the stock blower with how much boost? When should it be ported?

Sorry about general questions, let me know if you need more details!

Car is getting a upgraded heat exchanger as well.....does it need an upgraded pump?

Thanks!!!

[ZR]

Hey guys,

Just helping out a friend who is doing some mods on his Termi.

What are the limits of the stock 39lb injectors and fuel pumps? When are upgrades like MAF and BAP needed?
Also, what are the limits of the stock blower with how much boost? When should it be ported?

Sorry about general questions, let me know if you need more details!

Car is getting a upgraded heat exchanger as well.....does it need an upgraded pump?

Thanks!!!

On stock blower he'll never run out of injectors, some need a MAF though.
Stock IC pump is good.
To keep IAT's in reality, don't overdrive the blower as hard as some will suggest.
Not a fan of ported blowers, wanna make more squeeze n run harder, buy a bigger blower.
Safe tune on stock blower = in the 460 at the rear tires range
Stock pumps are fine for h/p capable from the stock blower.

[Slick_89_Hatch]

Thanks Rick! He is looking at a 4" lower and 2.76 upper which from what I have read is too much for a stock blower. And IMO would probably not be good for a ported one either.
Whats a good pulley combo that keeps things in check?

[03svt]

Ya that's spinning it pretty good haha. I ran a 2.76 upper on a stock blower, Accufab elbow and single blade t/b, long tubes, mid pipe and borla stinger cat back was a very consistant car and I'd say my favorite car I've owned to this day.

Made 470-501 or something like that.

[ZR]

Thanks Rick! He is looking at a 4" lower and 2.76 upper which from what I have read is too much for a stock blower. And IMO would probably not be good for a ported one either.
Whats a good pulley combo that keeps things in check?

To me, 2.76 upper n call it a day until he upgrades the blower itself. Most get by with the stock MAF but odd one pegs n needs upgrading. Add in a set of TR6 gapped to about .030 and an additional idler pulley below the blower and he's got a great combo that will not disappoint (with the appropriate tune of course).

[Slick_89_Hatch]

Is the additional idler to help keep belt tension? I really need to learn more about these cars.

[03svt]

Is the additional idler to help keep belt tension? I really need to learn more about these cars.

Yup, helps belt slip.

[ZR]

Yes cuts down slip via additional belt wrap (its pulley with gold bolt / comes with support bracket / straight forward to install)

http://www.billetflow.com/clearscpulley.jpg

[ZR]

Available from Steeda, Billetflow, Metco, etc.

[Darkhorse]

Anyone I know that has done a lower pulley on a cobra has been asking for trouble and got it.

2.8 upper and that's already spinning it pretty hard.

Larger IC is very important IMO.

[Slick_89_Hatch]

Thanks guys! I really appreciate the information. I really want one for myself lol....the whine from that blower is just sick!

[sxy_stang]

My car with stock blower and 2.8 pulley im making 460/480

[Slick_89_Hatch]

WOW....what other mods?

[ZR]

Still remember the feeling after getting my first / stock Cobra pullied n tuned making similar numbers...........epic first drive. Many don't realize how soft / docile the factory set up is.

[ZR]

Then there was first drive after installing the Whipple. While it's extremely cool making that kinda jam, never once felt disappointed with how it felt n performed with the stock blower n tune combo.

[sxy_stang]

Jlt ram air intake, sct ba2600 maf, 2.85 pulley and tune by Diogo, BBK x pipe and borla attak exhaust. Then a I have a couple of cooling mods but that's pretty much my performance upgrades at this point.

[Slick_89_Hatch]

Sweet! Car in question will have a 2.76 Upper, New Idler, back to stock lower pulley, SCT MAF and has a cat back. Not sure what brand CAI it has. Need to get a tuner then tuned! Also have an upgraded heat exchanger for it. Should be set I think.

[ZR]

It's going to rock hard.