mdemers883

Any feedback? The DMH kit looks a bit more sturdy...also, I'm liking the 4 year warranty.

mdemers883

Sorry to keep bumping this. But please let me know what diameter I need. I'm on the verge of ordering it right now.

Vetteman Jack

Contact forum member Patches - he's run electric cutouts on his car for a long time and can give you some good advice.

madmatt9471

Quiet mufflers and cut-outs is a Nasty Good combo and you can be stupid loud when you want too!

Thanks,Matt

mdemers883

I was originally thinking of getting some GHL bullets...but, obviously I can't control the sound on those. From people that have cut outs, do you think it was a better choice to keep the stock Ti catback and use the cut outs? I figure if I get the cut outs, I can use that to control the volume, and if I pick up a set of headers w/ cats and x-pipe it will be perfect.

Also, quick question on install. Can a regular muffler shop install this system or do I need to bring it to a specialty type shop?

Thanks!

ALLEGRO

I had mine done at a specialty shop, just to be sure they were where I wanted them......including the accuation switch and installed correctly.

If you EVER travel long distances in your car, cutouts are the ONLY way to go.

LEANDRO

I also have the DMH low profiles on mine. Performance stats aside, they are just alot of fun.

black98c5

I pick my car up this week- had my shop install DHM cutouts (among other go-fast parts). Can't wait to hear how they sound!

tbrent

I'll go ahead and request a video now In the event that no one has asked you for one yet! Congrats and can't wait to see/hear

black98c5

Thanks, Brent! After checking out a bunch of vid's including yours with the DHM cut-outs, I just had to get them. I'll definitely post some vid's when I pick the ride up

mdemers883

Where did you guys order your DMH's from? Did you order of their website or did you go through a vendor? The ones on the vendor websites look a bit different.

SeanME

I was wondering the same thing about the diameter. I dont have the Ti exhaust though.

agbrownmc

dont forget about the 02 sensor. dont put the cutouts before the o2 sensor, or you will have a well lit dash board

SeanME

That can be corrected via the ECU right?

mdemers883

Will these fit a c5 zo6?

http://marylandspeed.com/dmh-low-pro...ut-p-1313.html

CrossedPistols

This looks and sounds like the first mod I will make when I get back from the Sandbox!

diyguy

I went through 3 different kinds and each ironically sort of had in some fashion similar "problems" after awhile. Since QTP is a vendor here does not mean there are not better/comparable products to be had.

The absolute key to not destroying your electric cut outs is to NOT continue to hold the swith after they are fully opened or closed. When they start to get fully closed, let off the switch and quickly just 'bump' the swith to fully close or open.

All these are basically made the same way. There is a 12 volt motor that turns around 4000 RMP that goes into a gearbox with many sets of reduction gears inside. Most all are fairly small and at the final ouput shaft to the cutout drops to around 4 RPM, so that little motor can build up a LOT of torque to the output shaft.

When these cutouts fail, it is usually due to one of two causes. 1.) the gear reduction has destroyed the teeth on some of these small gears inside or 2.) so much torque has been applied when they are fullly open or fully closed that the connection collar between the output shaft and the butterfly shaft as stripped or pulled a setscrew loose.

Some are easy to fix and others, well....hope you have warranty. I can tell you this... If you so much as remove a single screw to investigate what went wrong I know of 2 companies that will not honor the warranty if you mess with it. On my last set I fully diagnosed the problem (fortunately not the gears) and proceeded to make my own fix which has been absolutely bullet proof.

Good Luck on the install - they really do make the car roar to life when you hammer it!

rickko

Easy to find out. Wrap a tape measure around pipe where you are going to install to determine circumference (C) of pipe. Divide C by Pi (3.1415926) to get diameter.

Even easier if you've got a caliper. They're fairly inexpensive at Harbor Freight.



..rickko..

mdemers883

Don't really have a way to get under my car. That's why I was wondering if anybody who has already installed this on a c5 z06 could let me know what size they ordered.

mdemers883

I just got a PM response from "Patches." The diameter is 2.5"