Shorter exhaust

[mgermasi]

How do you like this exhaust?
I was thinking instead of going bigger going shorter, what do you think?

 

[navdog_d40]

what does it sound like

 

[RustyNav09]

Legalities would be another one to look at. I know it qld it must exit the rear of the vehicle behind the rear axle or something. If it didn't have to I would of had mine shortened way back. Just means everything would be covered in diesel soot from that point on

 

[Dion]

It has to finish behind the last body seam, I'm guessing the D40 is similar to the D22/21, in that the last seam is at the rear firewall. So if the exhaust passes that, and points rearwards, it's fine.

 

[s.weapon]

ummm... i bent mine on the weekend trying to reverse out of a mudhole and had to cut it off just after the muffler before the axle, and ive lost torque.... are you sure you want it shorter?

 

[FatBoy89]

ummm... i bent mine on the weekend trying to reverse out of a mudhole and had to cut it off just after the muffler before the axle, and ive lost torque.... are you sure you want it shorter?

I also lost torque when I had it dump at the passenger doors

 

[jardz91]

I have mine dumping just out behind the passenger door. adds abit of a note but larger would certainly be better

 

[FatBoy89]

Yeah I changed my out for a 3" and so much happier with it

 

[mgermasi]

Thanks guys, I was just after some feedback the picture is from Mtrux is not my nav.
Well it looks like I'm not cutting my exhaust.
Cheers

 

[montana]

like a petrol "tuned length" diesel sometime need right amount pipe as well,i found mine needed infront of the axle so have normal length straight through standard size

 

[Dion]

Not really sure why any of you lost enough torque to pick it up on the pants dyno, organ pipe theory isn't really applicable with a turbo charger in the way, must be something else at play.

 

[qqc d22]

will shortening the standard exhaust up to near front door will it increase boost or egts?

 

[jardz91]

I have standard pipe shortened and dumping out the side just after the cab on a single cab. no mufflers on it. high flow cat in the dump pipe similar set up to standard but better cat. adds a slight noice but no noticible gain in power. Adding 3 inch full length system in a week. hopefully that does. i can upload pics of my current set up if anyone is curious

 

[qqc d22]

im curious

 

[joshman]

I cut mine shorter, 3" straight through, dumping just before my spare.

Joshman's Exhaust.

 

[qqc d22]

sounds good man. The reason i ask is a mate wants to know if he can unbolt his standard exhaust off right back near the gearbox/middle exhaust hanger. I said probly my old rodeo exhaust got crushed and taken off it finished about the same place and i left it like it for 6 yrs lol. Im lazy yes I just wanted to make sure for him that it wont increase the boost and hes worried about egts which i cant see being an issue.

 

[qqc d22]

so we ripped his zorst off right back up near the gear box :/ i reckon it has more torque and powa might be an illusion. it doesnt really whistle which was expected something unexpected but it gets a high pitch squell at about 2800rpm if you accelerate moderatly. if you sink the boot in its not there and if you baby it there is no noise :? any idea what it is. think were gonna throw it back on as it doesnt sound right at all.
makes me wonder if it needs some back pressure but wouldnt think so being turboed.
any ideas anyone apart from my idea of not being a tightwad and puttin proper zorst on lol

 

[4x4 ST-R]

so we ripped his zorst off right back up near the gear box :/ i reckon it has more torque and powa might be an illusion. it doesnt really whistle which was expected something unexpected but it gets a high pitch squell at about 2800rpm if you accelerate moderatly. if you sink the boot in its not there and if you baby it there is no noise :? any idea what it is. think were gonna throw it back on as it doesnt sound right at all.
makes me wonder if it needs some back pressure but wouldnt think so being turboed.
any ideas anyone apart from my idea of not being a tightwad and puttin proper zorst on lol

I did the same thing with my exhaust. I also got the loud whistle revving it up near 3000. If you disconnect it after the small muffler before the massive muffler you get a different, less harsh sounding whistle.

I bolted it all back together after those "tests" and now I'm half way through making my 3inch. As new pieces go on the sound changes a fair bit. Nearly done now, it's level with the start of the tub.

 

[qqc d22]

yeah did a bit of googling and found the noise to be common when mufflers removed. im just gonna make a 3" peice from ther back for now and do the front half of the exhaust when I get a chance