AAM Competition/Lou Fusz Nissan: 370Z Twin Turbo Build

JB-370z · 01-25-2010, 08:56 PM

Now that was a good Monday Update!

Jon@Altered · 01-26-2010, 10:47 AM

Quote:

Originally Posted by G35guy84

Probably an oversight on my part, but if Lou is going TT, then why get a 2.5" exhaust versus 3"? I wanna know because I've got the F.I. 2.5" exhaust and I plan to go TT in the future and wanna know if I could get away with it without having to buy a new exhaust system.

Quote:

Originally Posted by NYBladeZ

2.5" is sufficient but 3" is ideal its possible Lou just preferred the sound of the 2.5" but with turbos the bigger the exhaust diameter the better

You're both right. In most cases, we recommend a 3" diameter exhaust to be used with TT applications. Most turbocharged vehicles from sports cars to diesel trucks benefit from larger diameter exhaust, mainly because turbochargers flow a much greater volume of exhaust gases than a naturally aspirated engine. So under full boost, the turbocharger needs flow as much exhaust gas as possible to continue to spool as quickly and efficiently. However, some customers prefer the 2.5" look and sound to the 3" True Dual, and they may sacrifice small amount of top end power, but the smaller diameter exhaust usually produces a bit more low end torque than a 3" exhaust car.

Short answer, both 2.5" and 3" work perfectly fine with turbocharged cars.

Quote:

Originally Posted by roplusbee

Not sure how much of an impact a 3" exhaust will have on a 3.7L 6 cylinder, but when I installed a 3" (upgrade from 2.25") on my S13 (CA18DET), I lost all guts down low and it went bananas while in boost. That being said, I am sure the 3" exhaust will have benefits once in boost. Not sure how it will affect low RPM though.

You had a CA too?? That's awesome! I had a CA in my old S13 Fastback, and I loved that engine! My "baby RB", as I called it.

^Ahh, memories. The turbo feel, high revving, signature CA "tilt"...

Sometimes I really miss that old car.

FuszNissan · 01-26-2010, 10:57 AM

Fire her up yet?

Black370ZTT · 01-26-2010, 11:08 AM

Needed : Dyno Chart

StillenZ · 01-26-2010, 11:25 AM

TUESDAY!!! Lou drive his car?!?

FuszNissan · 01-26-2010, 11:31 AM

Quote:

Originally Posted by Black370ZTT

Needed : Dyno Chart

I agree. I looked at your dyno and you lose so much low end tq and power, I really want to see how the 2.5 will effect these numbers down low.

Black370ZTT · 01-26-2010, 12:30 PM

The tq curve isn't to good. In my opinion since the cats are 3in might as well go 3in all the way back

FuszNissan · 01-26-2010, 12:31 PM

I am excited to see if the lower power band will change

bullitt5897 · 01-26-2010, 12:53 PM

I decided to go bigger on the turbos. I feared that with the smaller turbos and bigger exhaust you would lose the low end power. That and my power goals would not be met with the lil turbos

hehe GT30's or bigger in my book lol

LiquidZ · 01-26-2010, 01:12 PM

Quote:

Originally Posted by bullitt5897

I decided to go bigger on the turbos. I feared that with the smaller turbos and bigger exhaust you would lose the low end power. That and my power goals would not be met with the lil turbos

hehe GT30's or bigger in my book lol

How long until your kit arrives?

theDreamer · 01-26-2010, 01:13 PM

Quote:

Originally Posted by LiquidZ

How long until your kit arrives?

Better question, how long after the kit arrives until it is done?

bullitt5897 · 01-26-2010, 02:15 PM

Majority of the kit is here I just uploaded pics from my phone to my computer and will be posting a thread tonight

now I am waiting on the supporting mods and backorder items like the K&N Filters, fuel system and what not. Once I get those parts in I will have a tenative date tto drop the car off at Forged and it should be no longer than 4 weeks until she breaths again!

FuszNissan · 01-26-2010, 02:17 PM

Good Luck Bullitt!

bullitt5897 · 01-26-2010, 02:49 PM

Thanks Lou! Same to you! I am enjoying your build hehe we are def gonna have to meet up after our builds!

370Zsteve · 01-26-2010, 04:42 PM

Quote:

Originally Posted by NYBladeZ

2.5" is sufficient but 3" is ideal its possible Lou just preferred the sound of the 2.5" but with turbos the bigger the exhaust diameter the better

Yes, 3" is ideal for a TT but "the bigger the better" is not true. 3" would be maximum for that setup.

EDIT: just saw Jon's response...I'm redundant redundant

01-25-2010, 08:56 PM	#46 (permalink)
JB-370z A True Z Fanatic Join Date: Apr 2009 Location: Houston, Tx Posts: 1,859 Drives: Stage 2 Twin Turbos Rep Power: 19	Now that was a good Monday Update! __________________ ll Baker Tuning ll GTM ll Powerhouse Amuse ll HKS ll Up-Rev ll iForged ll AP Racing ll Pioneer ll SPL ll Bride ll Top Secret ll OS Giken ll GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

01-26-2010, 10:57 AM	#48 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	Fire her up yet? __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

01-26-2010, 11:08 AM	#49 (permalink)
Black370ZTT Base Member Join Date: Nov 2009 Location: Maryland Age: 34 Posts: 47 Drives: A TT,Nothing special Rep Power: 16	Needed : Dyno Chart __________________ AAM Twin Turbo Kit, 500hp/400TQ UPrev "America is all about speed. Big, nasty, bad a$$ speed." Roosevelt

01-26-2010, 11:25 AM	#50 (permalink)
StillenZ Enthusiast Member Join Date: Oct 2009 Location: Indiana Posts: 283 Drives: 09 Nissan 370Z Red M Rep Power: 16	TUESDAY!!! Lou drive his car?!? __________________ Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

01-26-2010, 12:30 PM	#52 (permalink)
Black370ZTT Base Member Join Date: Nov 2009 Location: Maryland Age: 34 Posts: 47 Drives: A TT,Nothing special Rep Power: 16	The tq curve isn't to good. In my opinion since the cats are 3in might as well go 3in all the way back __________________ AAM Twin Turbo Kit, 500hp/400TQ UPrev "America is all about speed. Big, nasty, bad a$$ speed." Roosevelt

01-26-2010, 12:31 PM	#53 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	I am excited to see if the lower power band will change __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

01-26-2010, 12:53 PM	#54 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	I decided to go bigger on the turbos. I feared that with the smaller turbos and bigger exhaust you would lose the low end power. That and my power goals would not be met with the lil turbos hehe GT30's or bigger in my book lol __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

01-26-2010, 02:15 PM	#57 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	Majority of the kit is here I just uploaded pics from my phone to my computer and will be posting a thread tonight now I am waiting on the supporting mods and backorder items like the K&N Filters, fuel system and what not. Once I get those parts in I will have a tenative date tto drop the car off at Forged and it should be no longer than 4 weeks until she breaths again! __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

01-26-2010, 02:17 PM	#58 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	Good Luck Bullitt! __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

01-26-2010, 02:49 PM	#59 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3682	Thanks Lou! Same to you! I am enjoying your build hehe we are def gonna have to meet up after our builds! __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

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