Who still makes a supercharge kit?
 

I am looking to buy a like-new used kit.

From what I can tell Stillen still makes a kit (new) but I don’t want a Stillen kit as I’ve seen dyno sheets of them after being tuned and it’s not impressive (low - mid 400 whp) for a 7k new kit. So not looking for a used Stillen kit.

Trying to gather info as I plan to go SC soon! I saw GTM 1.5 kit that makes 500-550 WHP and that’s what I’m going for as I can see a 7A 370z safety running 500-550 WHP. But from what I saw GTM went out of business or no longer sales the kit new or offers warranty, correct?

So is there any other good / reliable kits I can buy used, that make 500-550 whp?
And what price should I look at spending on a good lightly used like new kit?

Who even makes a SC kit for our platform? Only GTM and Stillen. Please list all companies/ pricing for SC kit?

Thanks in advance! :tup:

I am making 504whp on stillens kit with Topgunz A2A conversion. But now he sells a complete kit with upgraded goodies already. Best bang for your buck

Is that on 93 octane?

Look for a good used gamma sc kit if you can find one, they are amazing kits, and u can still get parts thru rotrex.com and other manufactures if you do you’re research. I would have sold you mine but now there releasing a c38r sc unit that hopefully allow for even more boost so I don’t have to go turbo.

Ok cool. GTM is now Gamma from what I’ve researched, correct? So if I could find a GTM/Gamma 1.5 kit if I was lacking any parts or need replacement parts Rotrex.com has them? If so, Sweet! Great to know!


Sweet! $6000 full kit. Looks like that doesn’t include the 340 or bigger LPH or injectors though? Correct?

Also is TopGunz just a Stillen with upgraded parts? So if I could find a used TopGunz or used Stillen for a good price and buy the upgrade parts before install. I could make 500+ whp. Good to know, if true!!

Gamma also no longer exists but maybe somebody has a used kit out there.

Does not include injectors or fuel system. And yes it's a Stillen kit with an a2a upgrade. Mine's making 540hp on e85. It'll be over 600 when I do my pulley upgrade in June.

What kind of fuel system are you running?
Did you upgrade to the CJM S1-SE or still running the stock fuel pump from Stillen SC Kit?

I'm planning to upgrade my blower with the 928 super vortech upgrade -- going to send it in next week hopefully. I am going to isolate the blower this week and send it in next week.

That way I can do a triple pulley swap for more boost:
3.0", 3.47", and 9 psi pulley.

The fuel system I will be running will be 1050x ID, while keeping the modified bucket from Stillen SC kit and keeping the fuel lines the same for now until necessary to upgrade it.

Assuming I do all of this, in conjunction with Topz A2A kit on a 7 AT, what kind of whp should I be safely expecting on 91 oct? How about e85?
I hope at least 500whp?

I'm running the CJM S1-SE with a Walbro 450 and ID 1050x injectors. Also, have the 9 psi pulley. I'm making 472 on 91 and 540 on e85. That's @ 10 psi. That's on a safe tune. I'm going to do the 2.87 sc pulley change in June and see what I'll do.

Your results will vary depending how far your tuner want's to push it.

Do you highly recommend that I get the CJM S1-SE system or, in your opinion, do you think it is okay to run the way I have it set up at the moment (With the 1050x IDs, and the stock stillen modified fuel bucket upgrade?)

Or I guess my question is:
When do you think it is absolutely necessary to run the CJM S1-SE System?

Personally, I would upgrade now and get the CJM billet hat also. If you plan on running e85 now, I would get the Walbro 450 too. I wouldn't use any of the Stillen fuel system components. You don't want to be fuel starved. When I bought my kit from Stillen, I ordered it without the fuel system or water to air crap. My intake manifold was gutted just like what Topgunz will be selling with his kit.

Oh, I plan on running 91 octane for now.
I will ease into the e85 after the new engine is broken into, and data log it weekly to fine-tune it, adjusting things as necessary.

If it comes down to it, I will definitely get the S1-SE system.
For now, we'll see how it goes in May :)

I will keep updating the thread AND adding events in the timeline as they occur both good and bad.

Thanks for your advice sir! I appreciate it and will definitely take it into consideration!!

Hopefully, some others will chime in as I'm far from an expert. The last thing I would want to do is grenade a brand new built motor.

Well guess I’ll be on the look out for a good used Gamma / GTM 1.5 kit and if I need additional/ replacements parts I’ll check that site. Or look for a good used Stillen with upgraded A2A add on!

Anyone know of anyone with a good used kit? Also what’s install like on the SC kits? Seems pretty straight forward. Not like TT setup and pulling motor. I’m a gear head and do all my own work. So I know it’s done right.

So how hard of a job is it with the proper instructions & tools? Also do the kits come with a canned tune so the car is driveable or do I need to trailer it get it tuned via UpRev or other tuning software? Looking for general info here and possible used kits if anyone knows!

Did you order direct from Stillen? Does it still include the CARB cert plate? I want the Topgunz kit but no CARB cert.

So, I asked Phunk the Fuel Master about what his opinion was regarding my case, and this is the conversation:

Hi Phunk!

My vehicle is currently going to have the following upgrades:
- Stage IV IPP Long Block
- [x6] OEM GTR Spark Plugs
- 4 Bar Omni Sensor
- TopgunZ A2A Kit
- Tial Blowoff Valve
- Treadstone 720whp intercooler
- [x6] 1050x ID
- [x2] Brand new o2 sensors
- ATI Super Damp Street Crank Pulley, Stock size 5.7"
- Quaife LSD

Lastly:
- 928 Motorsports Super-Vortech Impeller & Bearings upgrade
- Triple Pulley swap of 3.0", 3.47", and 9 psi pulley.

My question to you:
- Do I ABSOLUTELY Need the CJM S1-SE system with these current upgrades or, will the returnless fuel stock system with the upgraded modified fuel pump from Stillen Supercharger Kit + 1050x ID be enough to safely run the vehicle?

Is it possible I could just upgrade the fuel lines to the fuel rails in that it being slightly bigger fuel lines to give enough fuel and maintain fuel pressure?
Or would you strongly recommend I get the CJM S1-SE return system?

Or perhaps you may know of a different method to get around this?

Thank you

His Response!?:
You definitely do not absolutely need a fuel system! You will be safe to run the vehicle with a 100% stock fuel system.

In the future when you want to turn up the power and push it, let me know. We should have fuel systems available indefinitely into the future!

Charles

I'm glad he said that xD

I ordered directly from Stillen. I ordered the Si sc instead of the stock Sci, I didn't order their fuel system, water to air system or their canned tune so it's not carb certified. No sticker.

OK...now this just contradicts everything I thought I understood about all this. The thing that's missing from his response is if there might be an ADVANTAGE to an upgraded fuel system? Might there be an advantage to just adding the 1050x injectors?

Asked another way: is there a cutoff horsepower level (or psi) where you need a fuel return system?

I hate when answers don't really go far enough, and only open the door to more questions...

I would assume that it really relies in the tuning.
If the tuning is calibrated to where you have a lack of fuel...
Fuel targets are fuel targets. If you can't hit them you need better hardware, and if it isn't hitting the target, it isn't running right.
If the fuel is wrong target then change it, and a lack of fuel is due to either mechanical issues or target being too lean.

So for example:
If you want to run e85, you need really good A/F sensors, otherwise you won't know if you are hitting the e85 fuel targets accurately or not.

I would also assume when he is talking about serious high HP numbers he probably means 600whp++ or in that range. Maybe 700whp? Haha.

Something I don't understand. You're spending a lot of money on parts to meet your goal of 700hp yet you don't want to spend money on a fuel system to support those mods. Are you planning on trying to hit 700hp on the stock fuel system?

No lol. I am going to definitely upgrade the oil cooler and fuel system, I just want to make sure if I dont need it now, I can spend that money elsewhere, ya feel me?

I am most definitely going to get the cjm s1-se, just not right this moment if I can safely push it aside and get other things like a 928 upgrade and get that out of the way haha.

Yeah, but you're getting the 928 upgrade so you can run higher boost (smaller pulleys) which means you want higher hp. Why not support that high boost now?

Because its either I get the 928 or the cjm s1 se first. one or the other xD and i prefer the 928 first only because it takes 2 week turnaround time plus the labor of removing headunit from bracket from engine bay then shipping it out lol

He also was aware of me having the 928 upgrade which is what I put in the PM and he still said it would be fine to run 100% stock fuel system (that being the stillen modified kit fuel sysfem), with 1050x IDs.

Im sure if it wasnt good he would recommend me get the S1-SE system.
I was surprised he said what he said as well , dont get me wrong! Considering the amount of boost I will be getting after 928...

But he knows what hes talking about Im sure way better than I can research lol. So I trust him.
I will still upgrade it when I upgrade to e85

Charles is definitely the man when it comes to fuel systems. So, you're still going to do the 928 upgrade after talking to Vortech?

Yeah because I want the bearings upgrade.
Unless I can use my triple pulley combination with just their impeller upgrade from vortech to make it an SCi...when I asked vortech, they said they dont know -.-

Yeah, bearing upgrade is a good idea. I hope my stock ones hold up. The stock sc is the Sci. The upgraded one (which is what I have) is the Si.

Yup and I'll let everyone know how the 928 upgrade holds up -- if I have to create a horror story or a success story. Chances, decisions, chances. Hmm...Haha.

I plan to replace my v3 head unit eventually when I max out the power on that thing with the a2a kit, and will be hungry for a v7. So hopefully the 928 will hold me out until then! (Somewhere in 2019 lol).

For now I want to go little by little :) safely haha

Yes sir, still room to grow too on 93!

Keep the updates coming.

Damn, I wish we had 93 here is California. 😣

Yessir!!
I most definitely will.
And tbh what also gravitates me toward 928 more than Vortech aside from the fact that Vortech had no idea and referred me to Stillen regarding the triple pulley sizes I asked about...and not willing to put in parts that they did not make even IF the customer signs a waiver saying it would void any warranties and such on the unit.
AND that vortech takes forever / never responds to emails or inquiries I send, and hard to reach even over the phone!!!!

Whereas Carl from 928 responds to emails, Stands by their work completely and has good customer service.
And has a bearing upgrade as well as an impeller...
And the fact that a lot of the high WHP supercharged successful people on these forums have the 928 upgrade inlcuding StillenZ84, I think I am leaning more toward 928 haha

Vortech never responded to an email I sent them months ago either. Yeah, a few guys on here have the 928 upgrade and I haven't heard about any issues with theirs.

There is no mention of a Stillen modified kit fuel system in Topz' kit, and he also recommends a pump upgrade. I was hoping to begin ordering parts soon, but now I'm confused which way to go -- with these conflicting opinions...

Oh. Haha sorry I may have used the wrong words.
What I meant by stillen modified fuel system is just the stillen instructions that tell the installer to modify the stock fuel pump housing from the 370z (We had to drill in a hole just enough for I forgot what reason but I remember drilling the hole in the stock fuel pump housing xD And that's all I really meant by, for when saying a modified kit fuel system haha.

It appears someone bought the GTM/Gamma firesale... There probably are SC kits to be pieced together there.

They had a fire sale? So the question is, who on here has got a kit for sale? :woot:

Also what size INJECTORS & PUMP are you guys running???

1050x ID is more than enough and the ideal size.
Pump? Most are running walbro 450s

A liquidation company was selling their entire stock... looked like a ton of parts.