what will adding a high flow cat add hp and torque wise.. and what would having a custom tube built so i run no cat add approx

 

Your stock cat is HUGE and is retricted. By swaping it with a High flow it will allow your car to flow better. You will notice better response but not much. Do you have to pass emissions where you live? By running a straight pipe you again, prob won't notice a difference besides your car smelling like crap. Plus if the cops should pull you over you will get a nice ticket!

 

yeah i have to pass emission.. someone told me my cat is clogged up it has 250k on the cat and plus bad opti making it run like **** also so i was thinking it might have made a bigger difference then that

 

Well bro if your cat is clogged and it indeed has that many miles on it then you will def notice a change with how your car runs. If your opti is bad then you need to take care of that too. I put a Magnaflow cat on mine cause I have to pass the sniffer to. No cat means no passing the sniffer so I wouldn't be installing a straight pipe!!

 

yeah i was planing on taking care of both at the same time... man what would u recommend on the distributor side cause stock ones are ****

 

AC DELCO is the one I would rec you getting. I have heard to many horror stories about the MSD's and the Accel.

 

where is the cheapest place to buy it from?

 

Check out Summit or ebay. I have never changed mine so I really couldn't tell you where the best place to buy.

 

ok thank you for your help though you saved me a head ache i think by telling me not to get the msd

 

Not a problem man. Yeah, I would stick to the AC Delco for sure. Be sure if you do find one it's an actual stock GM one and not some aftermarket garbage brand. Good luck with the Z!

 

If you're on a tight budget, simply replace the car and rotor. It's not a difficult task, once you get the opti unit off. A cap and rotor is about $150-60.