Topgunz full supercharger kits!!

TopgunZ · 02-13-2018, 12:48 PM

Quote:

Originally Posted by brucelidat

Would LTHs give me more power with this kit? I remember reading the Stillen kit supposedly lost boost and power or something with LTHs.

You will lose boost, but gain power because you will free up backpressure and instead of pressurizing your manifold (which is your boost reading) you get that spent combustion out of the way for more Air! Hence, more power.

phunk · 02-13-2018, 01:08 PM

Anything that improves airflow through a supercharged engine should result in a decrease of boost pressure. If the engine can digest the air with less effort, the build up of air (pressure) in the intake manifold will decrease. This doesn't mean the supercharger is pushing less air into the engine. Its compressor speed is defined by its drive ratio to the crankshaft. So lowering boost via improved engine airflow will only increase power: reduction in pumping losses and parasitic drag and improved thermal efficiency,

bcfromfl · 02-14-2018, 12:49 AM

I've read just about every thread on this board about exhaust systems, but most just discuss the sound out of various offerings from different manufacturers, or that they allow for more horsepower over OEM. But given that the Nismo exhaust is more free-flowing than the base model, how much would be left on the table by staying with the Nismo exhaust for the A2A system, coupled with high-flow cats? I really don't want a loud exhaust, and am fine with what's already there. But will retaining the Nismo exhaust result in noticeably hotter operating temps, and/or higher boost pressure?

I've looked at the dyno sheets, and I'm not really convinced that the aftermarket exhausts do more in terms of horsepower than the Nismo system, which, by extension, would also suggest that they don't move any more air. Thoughts? Thanks!

BOLIO 671 · 02-14-2018, 06:28 AM

If U want to stick with the Nismo Cat back that’s fine...to save u headaches in the long run ur gonna have to go with a LTH or Test Pipe...Exhaust temps will increase being boosted so u will eventually end up burning through ur Cats or HFCs...if u want something a little toned down then make sure u get resonated Test Pipes...they sound cleaner and are less raspy than straight test pipes

TopgunZ · 02-14-2018, 07:16 AM

Quote:

Originally Posted by BOLIO 671

If U want to stick with the Nismo Cat back that’s fine...to save u headaches in the long run ur gonna have to go with a LTH or Test Pipe...Exhaust temps will increase being boosted so u will eventually end up burning through ur Cats or HFCs...if u want something a little toned down then make sure u get resonated Test Pipes...they sound cleaner and are less raspy than straight test pipes

This. THey will eventually let go. Not as quick as HFC's but they will.

If you want the quietest test pipes on the market then look at the Motordyne ART pipes. THey sound exaclty like High flow cats.

G3RSTY7 · 02-23-2018, 09:08 AM

Quote:

Originally Posted by BOLIO 671

If U want to stick with the Nismo Cat back that’s fine...to save u headaches in the long run ur gonna have to go with a LTH or Test Pipe...Exhaust temps will increase being boosted so u will eventually end up burning through ur Cats or HFCs...if u want something a little toned down then make sure u get resonated Test Pipes...they sound cleaner and are less raspy than straight test pipes

I replaced my RHFC’s with res TP’s but even with resonated test pipes, rasp is pretty bad. Might try to weld on resonators everywhere available on my exhaust. The tone of the RHFC’s I thought was perfect but they’re too nice to risk blowing out IMO

G3RSTY7 · 02-23-2018, 12:20 PM

Are there any flex fuel kits for our car I should be thinking of utilizing? Gauges? Need recommendations now that I’m about to start hammering down a date for tune do you think I’m capable of install with enough time or go to mechanic? I have time not working right now and the most I’ve done is spark plugs and throttle bodies so haven’t got too deep on the car

cupcakez · 02-23-2018, 12:37 PM

Quote:

Originally Posted by G3RSTY7

Are there any flex fuel kits for our car I should be thinking of utilizing? Gauges? Need recommendations now that I’m about to start hammering down a date for tune do you think I’m capable of install with enough time or go to mechanic? I have time not working right now and the most I’ve done is spark plugs and throttle bodies so haven’t got too deep on the car

Check out my build thread.
Has a ton of info regarding supercharger upgrades

[Build Thread] -- Journey to 700+ WHP [Supercharger]

Shows costs, links and such for various accessories accompanying the Stille SC

bcfromfl · 02-14-2018, 09:01 AM

Grf...I was hoping not to have to go this route...don't want to deal with the smell and possible drone. In another thread, it was recommended to have 100-cel blanks welded into pipes that positioned them further back -- would this work? Or, is this just an expensive way to delay the inevitable?

Jayhovah · 02-14-2018, 09:07 AM

Quote:

Originally Posted by bcfromfl

Grf...I was hoping not to have to go this route...don't want to deal with the smell and possible drone. In another thread, it was recommended to have 100-cel blanks welded into pipes that positioned them further back -- would this work? Or, is this just an expensive way to delay the inevitable?

mil-spec (or some other very high end cat) located downstream appears to be a viable and reliable solution... though I don't know if anyone has been running it on this platform long enough to prove it out.

redondoaveb · 02-14-2018, 12:36 PM

Quote:

Originally Posted by Jayhovah

mil-spec (or some other very high end cat) located downstream appears to be a viable and reliable solution... though I don't know if anyone has been running it on this platform long enough to prove it out.

Tbatt runs 100 cell mil spec cats downstream, I'm not sure how long he's been running them though. I have a set on order and I'll be doing the same thing. Fast Intentions sells their lead pipes with 100 cell mil spec cats and Kevin said they work fine with forced induction.

For drone, here's what Tbatt did, I'll be doing the same mod also.

Fancy Tech: How to Get Rid of Exhaust Drone, works great!

bcfromfl · 02-14-2018, 01:49 PM

Thanks for the tips! I re-read TBatt's posts, and realized that he's got a Y-pipe. I think I've got an H-pipe on a Nismo? Haven't crawled underneath yet to check things out. I sent an e-mail to Fast Intentions to see what they say, and if they have perhaps a customized product. One thing I'm wondering is if a new wiring harness is needed for the O2 sensors if they are moved further back.

TBatt said the drone is reduced 50%, which has me wondering if that's still too much for me...

TBatt · 02-14-2018, 01:59 PM

Quote:

Originally Posted by bcfromfl

Thanks for the tips! I re-read TBatt's posts, and realized that he's got a Y-pipe. I think I've got an H-pipe on a Nismo? Haven't crawled underneath yet to check things out. I sent an e-mail to Fast Intentions to see what they say, and if they have perhaps a customized product. One thing I'm wondering is if a new wiring harness is needed for the O2 sensors if they are moved further back.

TBatt said the drone is reduced 50%, which has me wondering if that's still too much for me...

I'm running the standard FI TDX H pipe arrangement. The stock O2 sensor wiring works fine.

The new exhaust is much better than what I had but it is still kind of loud when accelerating. The main thing I was after was the constant drone at 70-80mph. It is now gone with the exception of load such as going up a hill. It's not bad but a little louder than I would like. Steady speed it is MUCH quieter!

bcfromfl · 02-14-2018, 02:58 PM

Thanks for chiming in, TBatt.

Sorry for the questions, and I don't mean to sidetrack this thread. I just want to make sure I'm prepared ahead of time for all the parts, and don't discover any nasty (read: expensive) surprises after I'm committed. I also don't want to stray too far from my goal of having a civilized car to drive, that won't have my wife giving me the stink-eye over!

brucelidat · 02-14-2018, 03:52 PM

Related to the SC kit, do you guys think 4.08 gears would be a problem? If so, what would you guys recommend, 3.9, 3.6?

02-13-2018, 01:08 PM	#2 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,669 Drives: 370 Rep Power: 974725	Anything that improves airflow through a supercharged engine should result in a decrease of boost pressure. If the engine can digest the air with less effort, the build up of air (pressure) in the intake manifold will decrease. This doesn't mean the supercharger is pushing less air into the engine. Its compressor speed is defined by its drive ratio to the crankshaft. So lowering boost via improved engine airflow will only increase power: reduction in pumping losses and parasitic drag and improved thermal efficiency, BOLIO 671, brucelidat, Rusty and 4 others like this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph Last edited by phunk; 02-14-2018 at 11:33 AM.

02-14-2018, 06:28 AM	#4 (permalink)
BOLIO 671 A True Z Fanatic Join Date: Mar 2010 Location: GUAHAN Posts: 1,198 Drives: To & From then Back Rep Power: 3401	If U want to stick with the Nismo Cat back that’s fine...to save u headaches in the long run ur gonna have to go with a LTH or Test Pipe...Exhaust temps will increase being boosted so u will eventually end up burning through ur Cats or HFCs...if u want something a little toned down then make sure u get resonated Test Pipes...they sound cleaner and are less raspy than straight test pipes __________________ 2013 Nismo Z34 / FI TT #091 / IG: @lilzilla_z34

02-23-2018, 12:20 PM	#7 (permalink)
G3RSTY7 Base Member Join Date: Aug 2017 Location: Colorado Posts: 103 Drives: Infiniti G37s 6MT Rep Power: 9	Are there any flex fuel kits for our car I should be thinking of utilizing? Gauges? Need recommendations now that I’m about to start hammering down a date for tune do you think I’m capable of install with enough time or go to mechanic? I have time not working right now and the most I’ve done is spark plugs and throttle bodies so haven’t got too deep on the car __________________ 09 G37S RWD 6MT, Topgunz Supercharger, CJM RFS, Walbro 450, 1050x, Nismo 1.5way LSD, Ecutek FF tuned by Seb IG: G3RSTY7 MyG37.com: RickyBobby

02-14-2018, 09:01 AM	#9 (permalink)
bcfromfl Enthusiast Member Join Date: Nov 2016 Location: Youngstown, FL Posts: 256 Drives: 2015 PW Nismo 6MT Rep Power: 10	Grf...I was hoping not to have to go this route...don't want to deal with the smell and possible drone. In another thread, it was recommended to have 100-cel blanks welded into pipes that positioned them further back -- would this work? Or, is this just an expensive way to delay the inevitable? brucelidat and wideglideleon like this.

02-14-2018, 03:52 PM	#15 (permalink)
brucelidat A True Z Fanatic Join Date: Jun 2011 Location: temple city, ca Posts: 2,432 Drives: 2011 370z 7AT GM Sp Rep Power: 32	Related to the SC kit, do you guys think 4.08 gears would be a problem? If so, what would you guys recommend, 3.9, 3.6? __________________ Works Emotion CR Ultimate - FI CBE w/ 18" resonators - Ecutek - eibach sways - Quaife - FI LTH w/race cats - kw v3 - spl - Topgunz SC - 488whp 398trq

02-14-2018, 12:49 AM	#3 (permalink)
bcfromfl Enthusiast Member Join Date: Nov 2016 Location: Youngstown, FL Posts: 256 Drives: 2015 PW Nismo 6MT Rep Power: 10	I've read just about every thread on this board about exhaust systems, but most just discuss the sound out of various offerings from different manufacturers, or that they allow for more horsepower over OEM. But given that the Nismo exhaust is more free-flowing than the base model, how much would be left on the table by staying with the Nismo exhaust for the A2A system, coupled with high-flow cats? I really don't want a loud exhaust, and am fine with what's already there. But will retaining the Nismo exhaust result in noticeably hotter operating temps, and/or higher boost pressure? I've looked at the dyno sheets, and I'm not really convinced that the aftermarket exhausts do more in terms of horsepower than the Nismo system, which, by extension, would also suggest that they don't move any more air. Thoughts? Thanks!

02-14-2018, 01:49 PM	#12 (permalink)
bcfromfl Enthusiast Member Join Date: Nov 2016 Location: Youngstown, FL Posts: 256 Drives: 2015 PW Nismo 6MT Rep Power: 10	Thanks for the tips! I re-read TBatt's posts, and realized that he's got a Y-pipe. I think I've got an H-pipe on a Nismo? Haven't crawled underneath yet to check things out. I sent an e-mail to Fast Intentions to see what they say, and if they have perhaps a customized product. One thing I'm wondering is if a new wiring harness is needed for the O2 sensors if they are moved further back. TBatt said the drone is reduced 50%, which has me wondering if that's still too much for me...

02-14-2018, 02:58 PM	#14 (permalink)
bcfromfl Enthusiast Member Join Date: Nov 2016 Location: Youngstown, FL Posts: 256 Drives: 2015 PW Nismo 6MT Rep Power: 10	Thanks for chiming in, TBatt. Sorry for the questions, and I don't mean to sidetrack this thread. I just want to make sure I'm prepared ahead of time for all the parts, and don't discover any nasty (read: expensive) surprises after I'm committed. I also don't want to stray too far from my goal of having a civilized car to drive, that won't have my wife giving me the stink-eye over!

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