GTM Performance Engineering: MHI Twin Turbo Official Release

SPOHN · 08-08-2013, 08:48 AM

I'm getting open dumps again on this kit. Love the attention. Had it on my 350 on a single turbo kit. It's loud, especially from outside the car. It just echoes off the road too. I love to scare people with them that are walking down the street. So far as in the city as long as your not full boost (I know, hard to do) it can be lived with.

Mr.Squeeze · 08-08-2013, 08:56 AM

Open dumps aren't that bad I have them on my car there loud when your pushing it WOT. I drive around part throttle or cruising and it's not loud at all.

I have also had recirculated into my exhaust and it was just to quiet while out having some fun with other cars. There were time were I couldn't here my car at all and I have a 3 inch exhaust.

leighspped · 08-08-2013, 09:00 AM

Quote:

Originally Posted by Mr.Squeeze

Open dumps aren't that bad I have them on my car there loud when your pushing it WOT. I drive around part throttle or cruising and it's not loud at all.

I have also had recirculated into my exhaust and it was just to quiet while out having some fun with other cars. There were time were I couldn't here my car at all and I have a 3 inch exhaust.

so you mean straight pipe gtr's?

Chuck33079 · 08-08-2013, 09:04 AM

Quote:

Originally Posted by Mr.Squeeze

I drive around part throttle or cruising and it's not loud at all.

Depends on when the wastegates are set to open up. I'm assuming you can get more than a few psi before the wastegates start opening since you're running a lot of boost. For someone that's running ~10 psi with a 5 psi wastegate spring, the wastegates are going to be open a lot even at part throttle. I recirculated mine with a 3" catted FI exhaust, and I couldn't be happier. Sometimes I want more noise, but that's ok. I prefer wanting a little more noise sometimes over wanting less noise all the time.

Mr.Squeeze · 08-08-2013, 07:26 PM

Quote:

Originally Posted by Chuck33079

Depends on when the wastegates are set to open up. I'm assuming you can get more than a few psi before the wastegates start opening since you're running a lot of boost. For someone that's running ~10 psi with a 5 psi wastegate spring, the wastegates are going to be open a lot even at part throttle. I recirculated mine with a 3" catted FI exhaust, and I couldn't be happier. Sometimes I want more noise, but that's ok. I prefer wanting a little more noise sometimes over wanting less noise all the time.

Good point sometimes I forget I run no less than 14 PSI of boost .

Quote:

Originally Posted by leighspped

so you mean straight pipe gtr's?

You lost me with this one straight pipe gtr's?

Dzel · 08-08-2013, 09:01 AM

Doors any one have any experience with electric dumps? My buddy had some on his SRT4 he would just flip a switch and it would automatically open our close his dumps.

Sent with TapAhoe

Chuck33079 · 08-08-2013, 09:04 AM

Quote:

Originally Posted by Dzel

Doors any one have any experience with electric dumps? My buddy had some on his SRT4 he would just flip a switch and it would automatically open our close his dumps.

Sent with TapAhoe

They have a long history of failing and leaking.

SPOHN · 08-08-2013, 09:27 AM

It's also amazing how smooth the boost is through out the band.

BlkNismo · 08-08-2013, 06:00 PM

had open dumps on my supra, was way too loud for daily. It was cool for a few weeks but swapped out. I like to be stealth.

Chuck33079 · 08-08-2013, 08:18 PM

Quote:

Originally Posted by Mr.Squeeze

Good point sometimes I forget I run no less than 14 PSI of boost .

Yeah, if I ever saw 14 psi I'd assume a vacuum line came off somewhere and a wastegate was stuck closed.

G37Sam · 08-08-2013, 08:20 PM

17 psi spring pressure here.. loving my open dump

I can see how it would get annoying on 5psi springs though

Mr.Squeeze · 08-08-2013, 08:40 PM

Quote:

Originally Posted by G37Sam

17 psi spring pressure here.. loving my open dump

I can see how it would get annoying on 5psi springs though

Now where talking some good boost right there.

OMGiGOTaZ · 08-12-2013, 12:23 PM

Working up a quote for me now

megalapagas · 08-12-2013, 02:23 PM

Wooo Power to us 7AT guys

SPOHN · 08-14-2013, 08:36 AM

The excitement of wanting this kit is on my car is gone for me.

08-08-2013, 08:48 AM	#1 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	I'm getting open dumps again on this kit. Love the attention. Had it on my 350 on a single turbo kit. It's loud, especially from outside the car. It just echoes off the road too. I love to scare people with them that are walking down the street. So far as in the city as long as your not full boost (I know, hard to do) it can be lived with. __________________

08-08-2013, 08:56 AM	#2 (permalink)
Mr.Squeeze A True Z Fanatic Join Date: Aug 2010 Location: Keystone state Posts: 1,209 Drives: 2010 370z Rep Power: 20153	Open dumps aren't that bad I have them on my car there loud when your pushing it WOT. I drive around part throttle or cruising and it's not loud at all. I have also had recirculated into my exhaust and it was just to quiet while out having some fun with other cars. There were time were I couldn't here my car at all and I have a 3 inch exhaust. __________________ Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

08-08-2013, 09:01 AM	#6 (permalink)
Dzel A True Z Fanatic Join Date: May 2011 Location: Midland, TX Posts: 3,884 Drives: 11 370Z PW M6 Rep Power: 23	Doors any one have any experience with electric dumps? My buddy had some on his SRT4 he would just flip a switch and it would automatically open our close his dumps. Sent with TapAhoe __________________ 10secWS6 IF YOU CAN'T SWING IT THEN DON'T BRING IT! Check out Domestic Performance C.C.

08-08-2013, 09:27 AM	#8 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	It's also amazing how smooth the boost is through out the band. __________________

08-08-2013, 08:20 PM	#11 (permalink)
G37Sam A True Z Fanatic Join Date: Dec 2008 Location: Dubai, UAE Posts: 1,507 Drives: RB'd G37 Rep Power: 21	17 psi spring pressure here.. loving my open dump I can see how it would get annoying on 5psi springs though __________________ '14 Viper GTS '08 RB'd G37S - Sold

08-08-2013, 06:00 PM	#9 (permalink)
BlkNismo Track Member Join Date: Sep 2011 Location: USA Posts: 614 Drives: Nismo Rep Power: 15	had open dumps on my supra, was way too loud for daily. It was cool for a few weeks but swapped out. I like to be stealth.

08-12-2013, 12:23 PM	#13 (permalink)
OMGiGOTaZ Enthusiast Member Join Date: Jul 2012 Location: Florida Posts: 316 Drives: 12 370Z Auto Sport Rep Power: 13	Working up a quote for me now __________________ all you gotta do is...

08-12-2013, 02:23 PM	#14 (permalink)
megalapagas Enthusiast Member Join Date: May 2013 Location: McAllen,TX Posts: 457 Drives: '10 370Z Tour A/T Rep Power: 12	Wooo Power to us 7AT guys

08-14-2013, 08:36 AM	#15 (permalink)
SPOHN A True Z Fanatic Join Date: Feb 2010 Location: Covington, GA Age: 46 Posts: 14,844 Drives: Waiting on next Z Rep Power: 222	The excitement of wanting this kit is on my car is gone for me. __________________

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