2003 Mustang Cobra Boost Question

RedSnake · 02-12-2008

I really like this site and am pleased to be a member. Anyway my question is this. With factory supercharge pulley, what is the boost needle on the guage reading when you are getting down on it? Is it 8 max or is it pegged. If pulley is smaller, as mine is, the boost guage is pegged. Will I hurt the engine? The man I got the car from has paper work on everything except a tuner shop after installing the pulley. Should I get the car tuned to be on the safe side? Thanks.

yellowsvtcobra · 02-12-2008

If the car has a smaller pulley like 2.80 it needs to be tuned so the air/fuel ration is setup for the boost if not the motor gunna go. The car should already been tuned when the pulley was installed. Stock 03/04 cobra run 8 psi, If its really cold u can see 10 psi.
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2003 cobra bassani catback & x pipe cold air intake , pro 5.0 short shifter 5 % tint all the way around.

RedSnake · 02-13-2008

I know that the more boost the more heat is generated. Can the eaton supercharger handle it or should I go back with the stock pulley and get tuned. Thanks

yellowsvtcobra · 02-13-2008

What size pulley do you have ?

Vinchenzo51 · 02-15-2008

i've actually got almost the same question, i have a 2.8" pully and a tune, but i have the stock guage in the cluster and have NO idea how much im boosting because even at like half pedal or so the needle is pinned, curious to know ABOUT how much PSI im pushin with a 2.8" pully, CAI, TB, Catback exhaust, new heat exchanger

RedSnake · 02-16-2008

Dyno should of gave you the max boost psi and I found out about a boost face plate change out for the guage. When I find out where and price I will let you know.

Vinchenzo51 · 02-16-2008

the guy i purchased the car from had it tuned/dyno'd, so i never asked him about max psi, and are you talking about a faceplate change for the factory guages? if so then that would be perfect, i want to keep my car looking as stock as possible with adding 2000 extra guages

RedSnake · 02-17-2008

yes, boost guage face plate only. Will let you know when I know. I don't and am not going to change all my guages either.

RedSnake · 02-17-2008

Quote:

Originally Posted by yellowsvtcobra

What size pulley do you have ?

The tech said he believes I have a 2.76 pulley due to the boost psi

RedSnake · 03-17-2008

Quote:

Originally Posted by Vinchenzo51

the guy i purchased the car from had it tuned/dyno'd, so i never asked him about max psi, and are you talking about a faceplate change for the factory guages? if so then that would be perfect, i want to keep my car looking as stock as possible with adding 2000 extra guages

still searching for that boost guage plate. I haven't forgot you. Will let you know soon one way or another. The person who told me about it hasn't got back to me as of yet.

RedSnake · 03-17-2008

Quote:

Originally Posted by yellowsvtcobra

What size pulley do you have ?

I found that it is a 2.810 pully on the car. Are you going to Carlisle in June

TorchRedGT02 · 03-17-2008

Quote:

Originally Posted by RedSnake

still searching for that boost guage plate. I haven't forgot you. Will let you know soon one way or another. The person who told me about it hasn't got back to me as of yet.

Is this what you are talking about? Boost-Overlays

RedSnake · 03-18-2008

Thanks a bunch. You saved me some time. Hope they aren't to much of a hassle to install.