blown_cobra

What is a boost leak?

Maverick04GT

It's simply where air is leaking out....for the problem you're looking at, it'd probably be a leak somewhere in the intake system between the MAF and the motor itself. First things first though, did you get it tuned when you installed the blower? If not, that could be your problem right there.

blown_cobra

What actually is a spark blowout? A guy locally told me that could be the problem. What should my plugs be gapped at witha supercharger?

blown_cobra

I bought the car from a car lot with the supercharger already installed, so I'm not sure if it has been tuned or not.

blown_cobra

It has always cut out ever since I had the car, but once I installed the msd coils it seemed to cut out even worse.

breagles

I have the same problem . It is your tune . I need to get mine dyno tuned also . I think on a blown mod motor the plug gap is .035 . I had a fuel leak in my fuel pump on the dyno when I was tuning mine so I couldn't finish my tune (don't ever go to the hot rod store of Texas to have a fuel pump built) . After I got it fixed at Murillo motorsports I scheduled an appointment for another dyno tune ,but it wasn't for a few days . So I drove it anyways figuring I'd take it in when the time came . I raced an 04 cobra and won but blew the motor in the process so take it easy on it until you can get it tuned. Don't do what I did .

GodAmGT00

Since it got worse when you installed a new Ignition, I'd say swap out the plugs for some decent ones, and I bet you'll be good...



JT

blown_cobra

What type of plugs should I use with a supercharger?

contentsunderpressur

Get a set of NGK TR6s and gap them at .032. I had the same problem with my 03 gt and my friend had the same problem with his blown 97 cobra. You must have non-platnium non-iridium plugs and the gap is the most important part. If your at 12 psi or lower go .032 gap, 13 to 16 psi go .030 and 17 up go .028. My friend with the 97 cobra has 18 psi and blew the spark out with a .035 gap. He went to .028 and hasn't had a problem since. Once again, the gap is very important on a blower car.

blown_cobra

you said non-platnium non-iridium plugs. I have some copper core plugs with a power tip made by autolite, would that work?