I am the proud new owner of a 2004 Mystichrome Cobra but am not
sure what non-stock items it has. Would really appreciate any help and
advice you guys can share. The mods seem to be just pulley, intake,
and cat-back exhaust. The exhaust I have identified as a flowmaster
setup. The car runs fantastic so I don't really have any problems
just trying to figure out what I have.


The intake, I cannot find what brand it is. It appears to be a
conical shaped K&N-style filter under the carbon fiber. Anyone by chance
know who makes this and is it any good or should I look at something else?


And this pulley measures 3.00 inch OD. I know now that it is non-stock
and appears to be of the quick-change variety? Anyone know the maker
and where I can buy other pulley sizes?


Also, is there a way to determine if the tune is stock or should I
just buy a tuner likethe SCT or HyperPAC?

 

Well that intake looks wierd.. and that pulley ehh....

As far as your tune.. If the car didn't come with a tuner, get to the dyno ASAP and check your A/F...If you wanted to change the pulley, any pulley will fit fine.As far as the intake.. does it go into the fenderwall? I would either put an open one in, or one thats a fenderwall... that just kinda looks closed up...

 

The nearest dyno to me would be at least an hour away; would rather avoid that if possible. Is it possible to check the A/F ratio with something like the HyperPAC or would it require a wideband O2 meter type thing? I don't really have any plans for the car but it does seem like I read somewhere if a smaller pulley is used on the stock tune, it can cause an overly lean condition (therefore possibly dangerous to the engine) -- is this why I need to check the A/F?

Here is another pic showing the side of the intake, I thought it looked a little odd.All the ones I have seen for sale are, as you say; more open, or route into the fenderwell..

 

I honestly have never seen that intake.

You're right - if you put a smaller pulley on the blower it will cause a lean condition, possibly causing a lot of motor damage. You need to check the A/F with a wideband... That's your other option which are normally really expensive. but i would stay completly out of boost until you get your a/f looked at. We had a member here that thought he had his car tuned, but was running very rich... he caught it before he broke something - i'd hate to see something happen to your new mystic...

 

Change out the intake to the JLT and swap the pulley out for a Billet Flow. You can check out Lethal Performance and buy whatever you need.

 

Driving an hour to get you car dyno tuned isnt a bad thing. If I want my car dyno tuned im driving at least an hour and this week my buddy is going 100+ miles to get his cobra tuned. Its just a few miles on the car. You scared to do that?

 

these guys are right you NEED a tune and any good tunner uses the dyno.

 

Understood! I have found a dyno tuning shop, as I guessed, about an hour
away, they are expensive butlook pretty good:
http://www.amazonracing.com/

They actually seem to specialize in Terminators so I guesss I just got
lucky...

I certainly don't want to take any chances with detonation. I'll stay
out of the boost until I can get everything sorted out. Wait a minute,
stay out of the boost? Wow, that is going to be hard to do.

Overall, the car is very tidy. It has just over 30k miles, still smells new,
clean carfax, and seems to have been very well taken care of. Would have
been nice to get a tuner with the car but no such luck.

I saw an ad for Lethal Performance in my most recent copy of MM&FF.
Good to have a reccomendation, they have a lot of cool stuff. The JLT
intake seems popular, I will take a serious look at getting it.

Those Billet Flow pulleys are very nice looking. Would the one BF pulley
puller enable me to both remove my current pulley as well as install the
new billet flow one?

Thanks for the advice guys! I'll report back some numbers after I get on
the dyno.

 

Yes it will.. u can use the puller to swap the pulleys, but what i would do, is let the tuner do it... if your inexperianced in pulling the pulley off and you dont pull it straight off, you can damage the snout of your blower...

 

from my experience its not very hard to pull it off. Atleast it seemed easy enough.