TORCHD 02 TA

iTrader: (39)

This maybe STICKY WORTHY!!!

About every week or so there are at least 5 GMMG threads. Everyone keeps asking about rasp, flowmaster merges and cutouts And It keeps getting annoying that myself and RevGTO need to keep educating everyone about these components..

Ok first of all, here is my exhaust set up that I am currently running on my Trans Am..

QTP 1 3/4" LTs + Custom Kooks 3" O/R Y Pipe + 3" x 3.5" Flowmaster Merge + 3" x 3" x 25" Powerstick Bullet Muffler + DMH 3" E-CutOut + GMMG Catback

Now to educate some people.. GMMG sounds absolutely PERFECT on a STOCK car. That means STOCK manifolds, STOCK Y Pipe.. It sound perfect

This is a vid from 2005.. My car was ALL STOCK


Now when you add LTs and go with an O/R Y pipe the GMMG starts to get raspy. This is a FACT.. Now by adding a catted Y pipe it will tame the raspiness down to be more bareable. I don't have a vid (of my personal car) to show where I had a STOCK cam and LTs with an O/R Y pipe..

But from here on out, all the vids and pics will be of my car with my cam.. 228/232 .58/.595 110+4

So lets move forward to LTs + O/R Y pipe + Flowmaster Merge. Here is my car going into storage from 2008 running this set up. Listen to how raspy this set up is. And this is USING a Flowmaster merge.




Now it is April of 2009. I still have my same set up as above but I added my E-CutOut, which wasn't working at the time for my dyno vids The set up is so loud you'll notice my tuner wearing ear muffs

I was idlinig VERY RICH here. Just added 42# injectores and 85mm MAF


Little 4500 RPM pull


5500 RPM Pull


6000 RPM Pull


6500 RPM Pull


Continuing on in post #2..........

TORCHD 02 TA

iTrader: (39)

So Later in 2009, these vids were shot in July. This is with my current exhaust set up that I posted in post #1

QTP 1 3/4" LTs + Custom Kooks 3" O/R Y Pipe + 3" x 3.5" Flowmaster Merge + 3" x 3" x 25" Powerstick Bullet Muffler + DMH 3" E-CutOut + GMMG Catback

Here are some pics.. I got the Powerstick and E-CutOut installed May of 2009











Now are the videos.. These vids are showing how that by adding the Powestick in the I pipe is what killed about 98% of my rasp. NOT the Flowmaster Merge. In the presvious vids you can hear how raspy it is. With these vids, when you listen, I tell you when I close my windows so you can hear from both the inside and the outside. Also I try to keep it in the 2100 RPM to 2300 RPM range where the rasp starts. With my set up it is ALMOST no exsistent!!!!!!









Continuing on in post #3..........

TORCHD 02 TA

iTrader: (39)

So now you've heard my car with my current set up, this time I will show you videos with my E-CutOut OPEN

The first clip is an idle clip. In the vid it starts off with the E-CutOut CLOSED. I then will tell to you when I OPEN the cutout


Idle Clip With EVERYTHING in bold From Post #1


Track Runs.. NO RASP or POPPING. Again my current set up with the E-CutOut OPEN.. You can clearly hear my exhaust set up over the 04 Cobra

http://www.youtube.com/watch?v=o_jezOZ2Fao

http://www.youtube.com/watch?v=S1Qx8hgu8i0

http://www.youtube.com/watch?v=ayzirfP3498

So I hope you all enjoyed my videos that I've put together over the years. Again just by adding a Flowmaster merge, YOU WILL NOT KILL RASP.. It all has to do with the PowerStick in the I pipe.. Ohh yeah and 1 piece of advice about installing the Powerstick... The trick is to install it against the grain

Please post up any comments or questions that you have!!

Thanks

-Jonas

bayer-z28

iTrader: (14)

Sounds a lot like my TSP Rumbler, actually. (In the first video)

SH1ZN1T

iTrader: (16)

Great Thread! Definitely Sticky worthy! I am actually looking for Headers with my GMMG CB.

bayer-z28

iTrader: (14)

^ If they actually stickied every thread like this, we'd have to scroll through two pages of stickies just to get to topics.

Not downing the thread though.

justin hover

How did you come to find out the trick is to install the powerstick against the grain?
are you saying to install it so called "backwards"?

hawiianpwr

iTrader: (2)

You have a great setup, pretty much the best of both worlds! Did you do it yourself?

MikeWS6

Sounds really good. Am I crazy or does that sound like the lm/rumbler? Maybe its cause the cut out is open.

Spd-Kilz

iTrader: (35)

Awesome post Jonas! Love your car too! So clean!

Racer001

iTrader: (15)

This is my GMMG exhaust. I have Dyno Don shorties with 2.5" y into a 3" merge, a 3" Magnaflow spun converter, and 3" to the gmmg.

http://www.youtube.com/watch?v=5cE1gOF7iLo
http://www.youtube.com/watch?v=0QwasPy-h_I
http://www.youtube.com/watch?v=hd3EbmJPhsI
http://www.youtube.com/watch?v=uiIsvubpzl8
http://www.youtube.com/watch?v=h0FM5eVASdM

You can clearly hear the rasp, and notice how you can distinctly hear my car over all the traffic and background noise. I had this setup for about 4 years. It was very raspy at 1800-2200 rpms under load like when you're going up a hill or something. It sounded bad. Once it started to make my daughter run away scared and start crying, I sold it for a Magnaflow. While it was "cool" back when I was younger (like early to mid 20s) I have to say that a quieter exhaust makes the car much more enjoyable

http://www.youtube.com/watch?v=kV_qJ0M1How

The Mighty Texan

iTrader: (4)

Good thread, nice work op.

Badguy7

iTrader: (6)

Great vids, car sounds nice now. Im considering the GMMG, might end up doing what you did with yours.

I guess you could say that your catback setup now is alot like the Stainless Works Chambered system? With 3 mufflers in it?

Ive wondered how the Stainless works system sounds, but damn they want alot for it lol

TORCHD 02 TA

iTrader: (39)

If I remember correctly RevGTO or another member told me to install it against the grain, or as you said backwards..

TORCHD 02 TA

iTrader: (39)

Did I do what myself? The exhaust set up? Or the fab work? The exhaust set up I did, I had a good friend piece my whole system together for me

TORCHD 02 TA

iTrader: (39)

Sounds nothing like the LM or the rumbler.. But that's just my honest opinon though

TORCHD 02 TA

iTrader: (39)

Thanks Adam for the kind words.. I had to make a post like this.. To many GMMG threads going around

What is the plan for your formy this season?

TORCHD 02 TA

iTrader: (39)

To be honest I've never seen the Stainless works GMMG system

justin hover

Your next one should be a thread on how that "GLASS" 10bolt is handling your 1/4 and hp..people are sceptical on getting gears and stalls cause glass breaks easily...nice write up man..good job

t/a98

iTrader: (6)

I have a three muffler powerstick set up. 30 inch in the I and two 24's in the back, basically a gmmg clone. Stepped headers 1 3/4- 1 7/8 ory big cam and other stuff. It's loud but not overbearing. It gets nasty when I'm on the gas. No rasp though. I agree the I pipe muffler is the key. I installed mine correctly though. Curious to hear why you should do it backwards? Classic chambered powersticks have a full 3 inch opening all the way through and the fins are pretty small. Not alot of restriction.