What muffler offset are you running? I plan on Spintechs. True duels with side exit.

[dieseldawg142]

Originally Posted by 85Bowtie

They're called chokemasters by idiots that don't understand you can't take an air hose and blow air through them to measure the flow rate.

Never had any rust, cracks, or rattles on mine. Guess maybe I should buy a lottery ticket.

When my truck ran...it had the Summit turbo mufflers with Dynomax headers. Sounded great...and cheap.

agreed, people who usually slag them have never used them. been running FM's on 5 diff trucks since early '90's. show me a spintech or whatever that will last 14 yrs under a 1 ton.
guess i better buy a lotto ticket too, for some reason my delta flow 50's dont rattle or rust either....bummer

[Keith Seymore]

Originally Posted by nekkidhillbilly

well performance for one thing they are know as chokemasters by most. there loud and rattle. that delta flow stuff rust out and start to blow out the back and the case cracks. it was on the truck when it was bought.

Originally Posted by 85Bowtie

They're called chokemasters by idiots that don't understand you can't take an air hose and blow air through them to measure the flow rate.

Originally Posted by dieseldawg142

agreed, people who usually slag them have never used them. been running FM's on 5 diff trucks since early '90's. show me a spintech or whatever that will last 14 yrs under a 1 ton.

That’s what I was thinking, too. I imagine most of those folks don’t have a flow bench in their back yard.

As a result of their sponsorship of the NMCA/NSCA “Fastest Street Car” series I’ve had 4” Flowmasters on my Chevelle for about 20 years. No issues and they have that distinctive Flowmaster sound.

A lot of guys around here run them on their 6 and 7 second street cars. I imagine they would be too loud for daily use (for me, anyway).

K

[motornut]

I'm running these Super40s they sound great.

[tgh117]

I ran my first set for 13 years through all the PA salt plowing every winter and never had any issues. I actually would have still ran them, but just went new and gave the old ones to my uncle for his square.

I have no issues with the 50's I have now, other then they are a hair quieter then I would prefer. otherwise I would buy another set again and again and again.


Good luck with your purchase though.