40th Stillen Supercharger Build

Nism0 · 06-20-2014, 04:45 PM

Just recently got my car back. I bought this supercharger kit used, so naturally we were missing some minor parts. The cog belts were the wrong size (tooth count indicated they are actually for a 350z, so they will be for sale soon!), the aftermarket coolant reservoir was too big, few bolts here and there...

After it was all installed we were able to make 400rwhp/340ftlb of torque @ 7psi.

The install/tuning was done by R/T tuning. They did an amazing job -very clean install.

We are currently working out an issue where the ecu switches into valet mode while I'm driving.

Other than that it's very fun to drive and I will post pics soon!

Also wondering if it would be worth getting the 9lb pulleys. I see some people on this forum making high 400's which is where I REALLY would like to be. Are the 9lb pulleys the solution?

Current Setup:
Stillen Supercharger Kit
928 impeller
550cc injectors
Berk Test Pipes
CNT Cat Back Exhaust
Aeromotive Stealth 355lph Fuel Pump

Team_STILLEN · 06-20-2014, 05:34 PM

I would advise going back to stock cats. We have seen significant power drops when using HFC's and Test Pipes with our supercharger. Also, if you are planning on going with the 9 lb pulley you will need at least 600cc injectors and I would recommend UpRev GT MAF's to make tuning easier.

Are you on 93 Octane?

Nism0 · 06-20-2014, 07:18 PM

Thanks for the reply. Yes I run 93 Octane. I suppose long tube headers are out of the picture if im going to stock cats...

future370zzz · 06-20-2014, 08:09 PM

Quote:

Originally Posted by Team_STILLEN

I would advise going back to stock cats. We have seen significant power drops when using HFC's and Test Pipes with our supercharger. Also, if you are planning on going with the 9 lb pulley you will need at least 600cc injectors and I would recommend UpRev GT MAF's to make tuning easier.

Are you on 93 Octane?

Mark, won't the stock cats burn up and need to be replaced after a certain period of time? Also, isn't there potential for the stock cat debris/burnt material to get back into the engine?

How much power is lost from going to test pipes? I'm currently using test pipes. My power/tq is listed in my sig.

1slow370 · 06-20-2014, 08:32 PM

the stock cats will last longer than HFC's, the ceramic oem element last longer than the coated foil in a HFC.

future370zzz · 06-20-2014, 08:47 PM

How long though? OEM cats are expensive.

TKomodo · 06-27-2014, 05:14 PM

Quote:

Originally Posted by future370zzz

Mark, won't the stock cats burn up and need to be replaced after a certain period of time? Also, isn't there potential for the stock cat debris/burnt material to get back into the engine?

How much power is lost from going to test pipes? I'm currently using test pipes. My power/tq is listed in my sig.

Quote:

Originally Posted by Team_STILLEN

I would advise going back to stock cats. We have seen significant power drops when using HFC's and Test Pipes with our supercharger. Also, if you are planning on going with the 9 lb pulley you will need at least 600cc injectors and I would recommend UpRev GT MAF's to make tuning easier.

Are you on 93 Octane?

sub'd for more info

Team_STILLEN · 06-27-2014, 05:47 PM

Quote:

Originally Posted by future370zzz

Mark, won't the stock cats burn up and need to be replaced after a certain period of time? Also, isn't there potential for the stock cat debris/burnt material to get back into the engine?

How much power is lost from going to test pipes? I'm currently using test pipes. My power/tq is listed in my sig.

1slow370 is correct. The stock cats will last longer than HFC's and are also more durable. They are very unlikely to break apart. We have seen HFC's blow out and clog the exhaust. I would not be concerned with the stock cats breaking up and sending pieces into the engine. The exhaust gases are coming out so fast I don't even know if that would be possible.

You are going to lose almost 1 lb of boost in the actual cylinder from using test pipes so you'd probably get back 20 whp from going back to stock cats (though I see you are on an upgraded blower which we have not tested). There is a chance with the upgraded blower the boost would be too high in the cylinders but I couldn't not say without testing.

@Nism0 If you are piecing parts together for the kit, might as well go with some 725-750cc injectors.

COSMO · 06-27-2014, 05:55 PM

After my tune I will sell you my 600cc injectors cheap..

Nism0 · 06-28-2014, 02:05 PM

Quote:

Originally Posted by COSMO

After my tune I will sell you my 600cc injectors cheap..

PM me the price.

Nism0 · 07-07-2014, 04:35 PM

Just an update for anyone interested.

I am trying to get a hold of some OEM Cats. Just ordered my boost gauge (I'm a little late on that I know). I also forgot to add in that I have a 928 impeller (will be updating that now).

I'll see how the car responds to the cats being added back on and take it from there. All around it's still very fun to drive at the moment

ANMVQ · 07-08-2014, 09:23 AM

With the stock cats back on you'll pick up a lot . Your only seeing 7PSI I had the impeller and was seeing 11-12 PSI and made 457 WHP g37x coupe your going to see a NICE change with the stock cats.

mikey1600 · 07-08-2014, 09:29 AM

Quote:

Originally Posted by Nism0

Just an update for anyone interested.

I am trying to get a hold of some OEM Cats. Just ordered my boost gauge (I'm a little late on that I know). I also forgot to add in that I have a 928 impeller (will be updating that now).

I'll see how the car responds to the cats being added back on and take it from there. All around it's still very fun to drive at the moment

what boost gauge you end up going with?

Nism0 · 07-10-2014, 07:48 AM

Quote:

Originally Posted by ANMVQ

With the stock cats back on you'll pick up a lot . Your only seeing 7PSI I had the impeller and was seeing 11-12 PSI and made 457 WHP g37x coupe your going to see a NICE change with the stock cats.

I'm under the impression that I can put the stock CATs back on and see 8psi. Would I need another tune to see 11+psi?

Quote:

Originally Posted by mikey1600

what boost gauge you end up going with?

I went with the PROSPORT 52mm EVO Series Digital Red / Blue Led Boost Gauge

ANMVQ · 07-10-2014, 08:20 AM

No way will you only see 8psi with the impeller. I had the Stillen Stock pully (8psi) and the impeller upgrade from Vortch same as the 928 and was seeing 11-12 PSI. I had no other mods the the SC or differnt pulley. I have a thread on hear all about my run at 500 WHP. Name of thread is Stillen500 WHP. You will need a new tune because you wil see more PSI.

btw 500 WHP on their kit will not happen

just be happy with mid 400's .

06-20-2014, 04:45 PM	#1 (permalink)
Nism0 Enthusiast Member Join Date: Jan 2012 Location: North Carolina Posts: 405 Drives: '19 Nismo Tech Rep Power: 13	40th Stillen Supercharger Build Just recently got my car back. I bought this supercharger kit used, so naturally we were missing some minor parts. The cog belts were the wrong size (tooth count indicated they are actually for a 350z, so they will be for sale soon!), the aftermarket coolant reservoir was too big, few bolts here and there... After it was all installed we were able to make 400rwhp/340ftlb of torque @ 7psi. The install/tuning was done by R/T tuning. They did an amazing job -very clean install. We are currently working out an issue where the ecu switches into valet mode while I'm driving. Other than that it's very fun to drive and I will post pics soon! Also wondering if it would be worth getting the 9lb pulleys. I see some people on this forum making high 400's which is where I REALLY would like to be. Are the 9lb pulleys the solution? Current Setup: Stillen Supercharger Kit 928 impeller 550cc injectors Berk Test Pipes CNT Cat Back Exhaust Aeromotive Stealth 355lph Fuel Pump __________________ '08 350z Enthusiast '10 370z 40th Anniversary '19 370z Nismo Tech Last edited by Nism0; 07-07-2014 at 04:35 PM.

06-20-2014, 05:34 PM	#2 (permalink)
Team_STILLEN Base Member Join Date: Dec 2013 Location: Costa Mesa, California Posts: 216 Drives: 2009 370Z Rep Power: 21	I would advise going back to stock cats. We have seen significant power drops when using HFC's and Test Pipes with our supercharger. Also, if you are planning on going with the 9 lb pulley you will need at least 600cc injectors and I would recommend UpRev GT MAF's to make tuning easier. Are you on 93 Octane? 370Zsteve likes this. __________________ Financing with Affirm now available!!! *STILLEN* \| Robin \| Performance Specialist \| rmoses@stillen.com\| 800.576.2131 x133 \|

06-20-2014, 07:18 PM	#3 (permalink)
Nism0 Enthusiast Member Join Date: Jan 2012 Location: North Carolina Posts: 405 Drives: '19 Nismo Tech Rep Power: 13	Thanks for the reply. Yes I run 93 Octane. I suppose long tube headers are out of the picture if im going to stock cats... __________________ '08 350z Enthusiast '10 370z 40th Anniversary '19 370z Nismo Tech

06-20-2014, 08:32 PM	#5 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	the stock cats will last longer than HFC's, the ceramic oem element last longer than the coated foil in a HFC. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

06-20-2014, 08:47 PM	#6 (permalink)
future370zzz Track Member Join Date: Dec 2011 Location: Bay Area Posts: 555 Drives: 10 Nissan 370z Rep Power: 15	How long though? OEM cats are expensive. __________________

06-27-2014, 05:55 PM	#9 (permalink)
COSMO A True Z Fanatic Join Date: Dec 2012 Location: FL Posts: 1,816 Drives: 2012 Touring GTM TT Rep Power: 20	After my tune I will sell you my 600cc injectors cheap..

07-07-2014, 04:35 PM	#11 (permalink)
Nism0 Enthusiast Member Join Date: Jan 2012 Location: North Carolina Posts: 405 Drives: '19 Nismo Tech Rep Power: 13	Just an update for anyone interested. I am trying to get a hold of some OEM Cats. Just ordered my boost gauge (I'm a little late on that I know). I also forgot to add in that I have a 928 impeller (will be updating that now). I'll see how the car responds to the cats being added back on and take it from there. All around it's still very fun to drive at the moment Team_STILLEN likes this. __________________ '08 350z Enthusiast '10 370z 40th Anniversary '19 370z Nismo Tech

07-08-2014, 09:23 AM	#12 (permalink)
ANMVQ A True Z Fanatic Join Date: Mar 2011 Location: Framingham MA Posts: 2,732 Drives: 2014 Q50 AWD Rep Power: 19	With the stock cats back on you'll pick up a lot . Your only seeing 7PSI I had the impeller and was seeing 11-12 PSI and made 457 WHP g37x coupe your going to see a NICE change with the stock cats. __________________ 14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

07-10-2014, 08:20 AM	#15 (permalink)
ANMVQ A True Z Fanatic Join Date: Mar 2011 Location: Framingham MA Posts: 2,732 Drives: 2014 Q50 AWD Rep Power: 19	No way will you only see 8psi with the impeller. I had the Stillen Stock pully (8psi) and the impeller upgrade from Vortch same as the 928 and was seeing 11-12 PSI. I had no other mods the the SC or differnt pulley. I have a thread on hear all about my run at 500 WHP. Name of thread is Stillen500 WHP. You will need a new tune because you wil see more PSI. btw 500 WHP on their kit will not happen just be happy with mid 400's . 370Zsteve and Nut_N_Much like this. __________________ 14 Q50 AWD, ARK, ECUTEK (SEB), Takda, Last edited by ANMVQ; 07-10-2014 at 08:21 AM. Reason: Uphp

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