Exhaust Questions

[proskeeterman]

Ok here goes: I am in the need of replacing my exhaust system and was thinking of upgrading to a turbo back, minus the "cat, 4' system. Ive just gotten my new Dipricol guages(boost, egt, trans temp) and will very soon, be ordering a TST #6 plate or the equivilant to it, as I do not want to get too much into my auto transmission, if I dont have to. I thought the 4'' would be a better choice, but after recent reading, I see that others think its not so unless you are going w/the big bombs. I am recent to the world of "Rattlin", so as you may have guessed by now, also damned confused. Should I go w/a 4" system or just replace w/a stock system. Also, probably the most I will ever tow, is my 4k(loaded) 21ft bassboat. I very much appreciate all the replys and do rely on your expertise. Many thnx to all. RATTLE ON!!!!!

 

[Silver Streak]

EXHAUST

Go with the 4'' exhaust from front to back, kill the cat, and use a small 4'' muffler.



SILVER STREAK

 

[Steve Roseman]

The money you save on the exhaust would get you half way to buying a new torque converter. Straight pipe your 3 inch or remove the cat and put a free flow muffler on.

You'll notice a bigger difference with a new TC than you would exhaust.

 

[Six_Man_Diesel]

I agree with Steve, just strait pipe the factory 3 inch, it sounds great, and I don't have an EGT problem, even with my stock plate slid forward... With the money you spend on 4 inch, you could buy the #6 plate probably. Just get under the truck with a hack-saw and cut the cat off. If you are a good welder, and have access to a mig, you can put the pipe in yourself, or just buy some 3 inch flex pipe, that always is easy to work with, and clamp it up. Whatever you decide, I would save some pennies, and go with 3 inch, I think you will be vary happy with it. Just my $. 02

 

[tschwab]

Well, I don't have a 4" system, but am considering one, or at least gutting the cat and using a free flow muffler. I will tell you, that my DTT VB & TC are the best performance/power upgrade I have made and with the TST cam plate, it is a pleasure to drive. Next mod(s) are injectors, bigger cam plate and ??

 

[kchristopher]

Originally posted by SLewis

or just buy some 3 inch flex pipe, that always is easy to work with, and clamp it up. Whatever you decide, I would save some pennies, and go with 3 inch, I think you will be vary happy with it. Just my $. 02

I wouldn't use flex pipe. Just use a straight length of pipe like I did, flared on each end to 3" ID. Costs about $20 from your local muffler shop.

 

[Mark_Kendrick]

I just put in a 4" exhaust from Husker High Performance the manufacturer is Expandit. Great sounding 4" mandrel bent system shipped same day and easy to install. You can't beat it. I would'nt have a straight pipe because of the noise and drone. You better half will never ride with you again. . wait that not necessarily bad



Seriously its not really louder than stock, has a much deeper tone. I couldn't be happier.

 

[DBCooper]

Just a note for you guys wanting to cut your cat out. The motor end of the cat (at least on a 98) is 3" and the muffler end is 4". I had a muffler shop make me a 30" long pipe that was 3" I. D. in and 4" I. D. out. Measure yours before you cut and have at it. Sounds good even with a muffler. Hope this helps.

Dan