what parts are needed to increase boost for Stillen Supercharger

DUSHER · 12-29-2019, 12:53 PM

As of right now I have the following parts/upgrades on my car:

Stillen supercharger
topgunz air to air upgrade
walbro 520
ID1050x injectors
CJM twin fuel pump
CJM S1.SE return system
Motordyne cats and catback exhaust
Stillen headers

I've read over 50 pages on the A2A thread and cant get a definitive answer on what parts are needed. I'm looking to get around 500-550hp. Also I will be running 91. Also Seb is currently tuning my car. Thanks for the help!

nic370 · 12-29-2019, 12:57 PM

How much power are you planning to make ?
That would tend to determine what upgrades are needed

Sent from my SM-G960F using Tapatalk

DUSHER · 12-29-2019, 01:01 PM

Quote:

Originally Posted by nic370

How much power are you planning to make ?
That would tend to determine what upgrades are needed

Sent from my SM-G960F using Tapatalk

good point and I was just thinking about adding that. Would be happy to be around 500-550. Will be running 91 octane unless you guys recommend other wise.

redondoaveb · 12-29-2019, 01:07 PM

Quote:

Originally Posted by DUSHER

good point and I was just thinking about adding that. Would be happy to be around 500-550. Will be running 91 octane unless you guys recommend other wise.

13 psi is about the max you'll be able to run on 91 octane. With the 9lb pulley and a 2.85 sc pulley, my car made 12.86 psi and 586whp on e85 with the same upgrades that you have. I can't remember what my 91 octane numbers were but was probably a little over 500.

I would go flex fuel. 91 and e85.

redondoaveb · 12-29-2019, 01:09 PM

You list a single walbro 520 but then you show a CJM twin pump. Why would you have a twin pump set up with a single pump?

DUSHER · 12-29-2019, 01:16 PM

Quote:

Originally Posted by redondoaveb

You list a single walbro 520 but then you show a CJM twin pump. Why would you have a twin pump set up with a single pump?

I got the twin fuel pump assembly for a pretty good price. Also when I took out my stock pump assembly the rods were already broken. So instead of buying a new nissan oem assembly I just bought the twin assembly for a good price.

DUSHER · 12-29-2019, 02:41 PM

Quote:

Originally Posted by redondoaveb

13 psi is about the max you'll be able to run on 91 octane. With the 9lb pulley and a 2.85 sc pulley, my car made 12.86 psi and 586whp on e85 with the same upgrades that you have. I can't remember what my 91 octane numbers were but was probably a little over 500.

I would go flex fuel. 91 and e85.

as far as flex fuel/e85 would this be all I would need https://www.specialtyz.com/370z-g37/...-fuel-kit.html ? Also could you point me to a website where I could buy those pulleys at?

"Z"en · 12-29-2019, 02:48 PM

Quote:

Originally Posted by DUSHER

as far as flex fuel/e85 would this be all I would need https://www.specialtyz.com/370z-g37/...-fuel-kit.html ? Also could you point me to a website where I could buy those pulleys at?

The kit shown seems to be for NA. Seb knows what kit suits you. There are options out there.

redondoaveb · 12-29-2019, 03:17 PM

Quote:

Originally Posted by DUSHER

as far as flex fuel/e85 would this be all I would need https://www.specialtyz.com/370z-g37/...-fuel-kit.html ? Also could you point me to a website where I could buy those pulleys at?

For flex fuel you will need the Zeitronix ECA-2. I'll find the links for the pulleys.

"Z"en · 12-29-2019, 02:07 PM

Quote:

Originally Posted by DUSHER

As of right now I have the following parts/upgrades on my car:

Stillen supercharger
topgunz air to air upgrade
walbro 520
ID1050x injectors
CJM twin fuel pump
CJM S1.SE return system
Motordyne cats and catback exhaust
Stillen headers

I've read over 50 pages on the A2A thread and cant get a definitive answer on what parts are needed. I'm looking to get around 500-550hp. Also I will be running 91. Also Seb is currently tuning my car. Thanks for the help!

Single 520 paired with 1050 is way overkill for 91. Not good to run rich in low boost.

redondoaveb · 12-29-2019, 02:22 PM

Quote:

Originally Posted by "Z"en

Single 520 paired with 1050 is way overkill for 91. Not good to run rich in low boost.

Yeah, if he's only going to run 91 then you're right they are overkill. If he switches to flex fuel then he would need them.

DUSHER · 12-29-2019, 02:35 PM

Quote:

Originally Posted by "Z"en

Single 520 paired with 1050 is way overkill for 91. Not good to run rich in low boost.

I'm just going with what Seb is recommending. With Seb's tune my afr doesnt look rich as well.

"Z"en · 12-29-2019, 02:46 PM

Quote:

Originally Posted by DUSHER

I'm just going with what Seb is recommending. With Seb's tune my afr doesnt look rich as well.

That might be bc of the way the base fuel pressure is being set. Twin pump is a better choice of staggered fuel pump setup for flex fuel tbh. Use the smaller one in low boost (or pure gas) and activate the bigger one to use both of them simutaneously in high boost (when running E).

turtle64b · 12-29-2019, 03:26 PM

You can also change up the Supercharger-side pulley ratio. Larger on the jackshaft, smaller on the supercharger. There's a small pulley thread in this topic that I started to try to break up the large Supercharger topics into sub-topics.

redondoaveb · 12-29-2019, 03:31 PM

Quote:

Originally Posted by turtle64b

You can also change up the Supercharger-side pulley ratio. Larger on the jackshaft, smaller on the supercharger. There's a small pulley thread in this topic that I started to try to break up the large Supercharger topics into sub-topics.

Yep, you can. I have a 3.47 jackshaft and a 3.00 sc. The problem with changing the jackshaft pulley is that you'll need to add a spacer to the sc pulley and idler pulley because the stock 3.2 jackshaft pulley is a different offset than the vortech pulley you'll be replacing it with.

12-29-2019, 12:53 PM	#1 (permalink)
DUSHER Base Member Join Date: Oct 2017 Location: Colorado Posts: 130 Drives: stillen 370z Rep Power: 8	what parts are needed to increase boost for Stillen Supercharger As of right now I have the following parts/upgrades on my car: Stillen supercharger topgunz air to air upgrade walbro 520 ID1050x injectors CJM twin fuel pump CJM S1.SE return system Motordyne cats and catback exhaust Stillen headers I've read over 50 pages on the A2A thread and cant get a definitive answer on what parts are needed. I'm looking to get around 500-550hp. Also I will be running 91. Also Seb is currently tuning my car. Thanks for the help! Last edited by DUSHER; 12-29-2019 at 01:04 PM.

12-29-2019, 12:57 PM	#2 (permalink)
nic370 Base Member Join Date: Apr 2015 Location: uk Posts: 187 Drives: 370 Rep Power: 10	How much power are you planning to make ? That would tend to determine what upgrades are needed Sent from my SM-G960F using Tapatalk DUSHER likes this.

12-29-2019, 01:09 PM	#5 (permalink)
redondoaveb A True Z Fanatic Join Date: Apr 2017 Location: So. Commiefornia Posts: 6,370 Drives: 2014 Nismo Gunmetal Rep Power: 2684374	You list a single walbro 520 but then you show a CJM twin pump. Why would you have a twin pump set up with a single pump? "Z"en and DUSHER like this. __________________ Fast Intentions "Stage Seb" twin turbo #098- Specialty Z/Tial-Xonarotor/CJM/Ecutek/HKS/KW/SPL/Hotchkis/Rohana/Toyo 700+whp

12-29-2019, 03:26 PM	#14 (permalink)
turtle64b Track Member Join Date: Jun 2015 Location: Granbury, TX Posts: 550 Drives: '11 SC Blue 7AT Rep Power: 3366	You can also change up the Supercharger-side pulley ratio. Larger on the jackshaft, smaller on the supercharger. There's a small pulley thread in this topic that I started to try to break up the large Supercharger topics into sub-topics. redondoaveb likes this.

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