89 GMC Sierra 350 TBI 3 inch Single Performance Cat, No Muffler

[flucyducy]

Way to ruin the motor, reving it upo right after cranking lol? And straight pipes rob gas mileage and you have no backpressure whatsoever. Cherry bombs are nice, But just packed with fiberglass like a factory muffler lol. which burns out over time and sounds raggedy.

[backyarddoall]

@flucyducy

2- my truck didn't have straight pipes, it had a single 3 inch pipe with a cat on it.

[backyarddoall]

@flucyducy

3- straight pipes don't rob mileage or back pressure. Back pressure doesn't play into this, it is exhaust velocity, and I had plenty with the cat in place.

[backyarddoall]

@flucyducy

4 - Cherybomb is a name brand, not a style of muffler. My muffler had no packing in it, it was a chambered muffler. Nothing to burn out.



[backyarddoall]

@flucyducy

5- Factory mufflers do not have packing. They have a series of baffles and chambers. Once again, they do not burn out. They might rust out after years of service, but not burn out.

[backyarddoall]

@flucyducy

6- You are clearly an idiot that knows nothing about vehicles. You make up statements that you beleive to be true and hammer people online. Do some real research.

[backyarddoall]

@flucyducy

Let's break your statement down.

1 - reving a motor to 3K with full oil pressure isn't going to damage the engine. I drove this truck over 300,000 miles, so I can say that without a doubt.

[captaincrunch69]

I like the sound of my flowmaster, not to mention I notice an increase in MPG over factory...personal preference I guess, cherry bombs are just too loud

[backyarddoall]

personal preference and those pesky flow benchs

The sound level is different between models.

[DualsMeatChevy94]

@captaincrunch69 yes but there is a good loud and a bad loud

[josh28781983]

sounds like someone needs a flowmaster 44

[backyarddoall]

Why would I put a crap flowmaster on my truck and plug the exhaust up. Flowmaster's have the worst flow of any muffler on the market.

The truck now has a Cherrybomb on it, one of the highest flowing mufflers on the market.

[rockinbass01]

@backyarddoall cherry bombs dont flow all as good as you think.. You need some back pressure but at the same time you want good velocity.. More flow is good until a point

[arcticcat136]

mines sounds exactly the same, i have a 2 ft straight pipe off of the stock cat

[whoewasthatit]

@arcticcat136 i had the same setup but i took the cat off and put on a flowmaster 40 with turndowns. it sounds so much better without the cat

[napierottiLSpwr]

nice truck

[4x4truck321]

Was the muffler a single camber muffler?that is almost like a strait pipe

[alpinetypeR666]

@4x4truck321 he said he has no muffler

[4x4truck321]

have any gains in power or did you lose any power

[backyarddoall]

Marginal gains and no loss. I saw a big increase over the crappy FLOWMASTER, but that is absolutely no surprise, they should be called Flowlessmistresses.

No drone AT all, great road matters.

[brapboys503]

@backyarddoall Yeah man, I hate Flowmasters too. I like glasspacks.

[4x4truck321]

did you lose any power and mpg?

[backyarddoall]

I doubt there was much gain over the stock exhaust, I would say within 2 MPG, but once again, compared to the NOFLOWMATER, I saw nearly a 5 MPG jump.

[01ChevyZ71Fisherman]

how can i get a high flow cat on my silverado when it has two cats?

[backyarddoall]

The factory cats on the newer style trucks seem to flow well for a fairly stock truck. You can still run magnaflow cats, but you will have to run a pair of them. No big deal really, just twice the expense.

Since your truck is an 01, I would cut the Y pipe off and run a x pipe and dual pipes out from there. Better sound. Whatever the size of the pipe coming out of the converter is the size pipe I would have the rest of the system done with. No since going larger, no benefit.

[alecm94]

did the cat make it louder? im runnin without one but wanted a high flow cat and wasnt sure if it would get quiet again if i put a cat on again

[backyarddoall]

made no effect on sound, doubt it made it louder. The truck was impossible to drive quietly, even at an idle it was insanely loud. Within 2 weeks, it had a muffler on it.

[alecm94]

what brand of cat? magnaflow?

[backyarddoall]

Not real sure, either magnaflow or catco.

[LoganTheRedneck]

how did you get it to sound like that just a straight pipe in to tail pipe and what diameter pipe you useing

[backyarddoall]

The entire system is 3 inch. The factory y-pipe was 3 inch, from there to a 3 inch high flow catalytic converter, and just a professionally done smooth pipe all the way out to the stock position. It is very subtle and I regularly get asked when I am going to put an exhaust system on it. Once I start it, they can't believe it.

[backyarddoall]

A key factor is the high flow cat. A stock cat is going to be really quiet.

[95oldsaurora]

@backyarddoall not necessarly i have a stock cat and its quite loud and have this same setup

[wvids1]

thats almost scary loud ! holy shit haha

[2stage90]

Damn your making the dual pipe guys jealous with that thing. Im going single also to keep the 35 underneath. Nice video.

[backyarddoall]

I love it when someone tells me, you can't get a single exhaust to sound like that.

[vanduraman]

:D :D

[mikedl622]

HOLY SHIT! Thats fucking loud man.

[backyarddoall]

Check out my other video, it has a muffler now

[twankedls]

sounds mean wha muff is it. i do like muffs if you know what i mean

[backyarddoall]

no muffler at all, only a high flow cat. It now has a cherrybomb extreme on it, the smallest one they make in a 3 inch. Didn't change teh sound of it.