GTM MHI Twin Turbo vs. Fast Intentions Twin Turbo

BigT · 05-29-2013, 10:39 AM

Please don't bother to ever make a thread with valid questions.

The MHI kit will spool faster, but make less top end. It is designed more as an OE kit. The full race kit is way more expensive and will make more top end power. Choose your evil.

Chuck33079 · 05-29-2013, 10:44 AM

Quote:

Originally Posted by BigT

The MHI kit will spool faster, but make less top end.

Spool will depend on which turbos you're comparing. 16g vs. a GT28 with the big housing or larger? MHI all the way. 20g vs. the GT28 with the .63 housing? GT28. Ball bearing turbos like the Garretts will spool faster than a similarly sized journal bearing turbo like the MHIs.

BigT · 05-29-2013, 02:15 PM

Quote:

Originally Posted by Chuck33079

Spool will depend on which turbos you're comparing. 16g vs. a GT28 with the big housing or larger? MHI all the way. 20g vs. the GT28 with the .63 housing? GT28. Ball bearing turbos like the Garretts will spool faster than a similarly sized journal bearing turbo like the MHIs.

Ball bearing doesn't have a huge affect on initial spool. Transient response and turbo life is where BB shines.

Spool has more to do with turbine housing and wheel size. Have you seen how tiny MHI turbine housings are for 16g's and 20g's?

Chuck33079 · 05-29-2013, 02:20 PM

Quote:

Originally Posted by BigT

Ball bearing doesn't have a huge affect on initial spool. Transient response and turbo life is where BB shines.

Spool has more to do with turbine housing and wheel size. Have you seen how tiny MHI turbine housings are for 16g's and 20g's?

If by initial spool you mean boost threshold, you're correct. A 20g isn't really that small, although I haven't looked at the specific flavor of wheel they're using. The Greddy kit uses 20gs as well, and people haven't seemed to complain about boost tapering to redline.

Baer383 · 05-29-2013, 08:47 PM

I'm ready with all the body bags we will need when the bloodshed starts.

SPOHN · 05-29-2013, 11:08 AM

Should known someone would

elperuano · 05-29-2013, 12:40 PM

Well to entertain this thread I would pick FI kit if money wasnt an option.

Gtm kit has limits. FI kit doesn't. Just comes with a price tag.

Chuck33079 · 05-29-2013, 12:45 PM

Quote:

Originally Posted by elperuano

Well to entertain this thread I would pick FI kit if money wasnt an option.

Gtm MHI kit has limits. FI kit doesn't. Just comes with a price tag.

Fixed. We both know how good the GTM Garrett kit is.

theDreamer · 05-29-2013, 12:43 PM

To help this and other threads out, if I get time this week I will put together in the noob thread (370z Forced Induction for Noobs...) a spreadsheet comparing the kits.

What it will probably look like:
GTM Garrett v F.I. v Greddy v GTM MHI - TT group
GTM v Stillen - SC Group
BP v VIS - T group

elperuano · 05-29-2013, 12:50 PM

D'oh! Forgot to put the MHI lol. Thanks.

And yea the Gtm Garrett TT kits r awesome. 12 lbs of boost n 10k miles later still can't stop smiling

Hermitns · 05-29-2013, 01:30 PM

you'd get out of here safer if you were caught with one of their old ladies....talking turbo trash...

Hermitns · 05-29-2013, 01:33 PM

HAD the cash but research lead me to buy....gold and silver (sorry Tony). I'll live with 315 hp for a while.

View Poll Results: Which Twin Turbo Kit would you pick?
GTM Performance Engineering: MHI Twin Turbo	8	32.00%
Fast Intentions Twin Turbo	17	68.00%
Voters: 25. You may not vote on this poll

05-29-2013, 10:39 AM	#1 (permalink)
BigT Enthusiast Member Join Date: Jan 2012 Location: NJ Posts: 469 Drives: 98 2g DSM Rep Power: 14	Please don't bother to ever make a thread with valid questions. The MHI kit will spool faster, but make less top end. It is designed more as an OE kit. The full race kit is way more expensive and will make more top end power. Choose your evil. __________________ 2014 Jeep GC 1998 Talon TSI awd 2011 Z Sport - SOLD

05-29-2013, 08:47 PM	#5 (permalink)
Baer383 A True Z Fanatic Join Date: Aug 2010 Location: Lawrenceville,Ga Posts: 4,293 Drives: My foot up your azz Rep Power: 30	I'm ready with all the body bags we will need when the bloodshed starts. SPOHN and elperuano like this. __________________ 2013 ZL1 754 rwhp 747 rwtq

05-29-2013, 11:08 AM	#6 (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	Should known someone would __________________

05-29-2013, 12:43 PM	#9 (permalink)
theDreamer A True Z Fanatic Join Date: Feb 2009 Location: Texas Posts: 30,879 Drives: 370z Rep Power: 4211	To help this and other threads out, if I get time this week I will put together in the noob thread (370z Forced Induction for Noobs...) a spreadsheet comparing the kits. What it will probably look like: GTM Garrett v F.I. v Greddy v GTM MHI - TT group GTM v Stillen - SC Group BP v VIS - T group __________________ theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN theDreamer's Silvia // URAS // GREDDY Houston Zs // Facebook // Twitter // Instagram

05-29-2013, 12:40 PM	#7 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	Well to entertain this thread I would pick FI kit if money wasnt an option. Gtm kit has limits. FI kit doesn't. Just comes with a price tag.

05-29-2013, 12:50 PM	#10 (permalink)
elperuano A True Z Fanatic Join Date: Oct 2011 Location: Southwest FL Posts: 1,374 Drives: G37S Rep Power: 29	D'oh! Forgot to put the MHI lol. Thanks. And yea the Gtm Garrett TT kits r awesome. 12 lbs of boost n 10k miles later still can't stop smiling

05-29-2013, 01:30 PM	#11 (permalink)
Hermitns Base Member Join Date: Nov 2011 Location: Fla Posts: 143 Drives: 11 370 auto Rep Power: 14	lmfao you'd get out of here safer if you were caught with one of their old ladies....talking turbo trash...

05-29-2013, 01:33 PM	#12 (permalink)
Hermitns Base Member Join Date: Nov 2011 Location: Fla Posts: 143 Drives: 11 370 auto Rep Power: 14	I HAD the cash but research lead me to buy....gold and silver (sorry Tony). I'll live with 315 hp for a while.

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