What would you pay for a Supercharger kit?

[PantherRacer]

I want it for better response, not really horsepower gains. Supercharger to get rid of the low rpm lag and give that extra bit of grunt/push for the edge in a race. It'll also allow for a larger turbo to be run at a higher boost.

twincharged KA/SR > turbocharged KA/SR

And yes, more style/bling/creativity points. and for I there would be the props cuz there are no twincharged cars over here (at least to my knowledge)

[Chezedik]

None that are stock, but wouldn't the supercharger become an intake restriction for a large turbo?

[PantherRacer]

the supercharger is before the turbo, so it pushes the air through the turbo, at 4k rpm (or when the turbo reaches the same boost pressure as the supercharger) the passage to the supercharger is blocked off by a valve/shut off.

so basically there are 2 pipes and a valve closing the supercharger off so it doesn't cause air restriction.

[Chezedik]

It still seems a lot more trouble than it would be worth.

[PantherRacer]

's always a lot of trouble if you haveto do a lot of work yourself. But it'd be worth it for me

[95lstegman]

then you do it. sounds like a total waste to me. just get a dam small turbo and a bigger one and run them in parallel with a valve that switches between them. you'll save weight, space, and headache. plus, the hardware is already out there, and cheap. you can get misc. piping and actuators from stock TT vehicles with unequal turbos like the Supra and RX-7.

and for the OP, the reason i say NO FMU is quite simple. sure, some companies do it, but that doesn't mean it's right. food for thought:your stock injectors run at about 45psi of fuel pressure, which ramps up to something like 55psi or whatever under WOT. the stock fuel pump is limited to between 65-75psi depending on the model and condition, and flow rate at that pressure will not be optimal anyways, so you upgrade your fuel pump. great. with an FMU using stock injectors, you'll need about a 12:1 rising rate for boost. this means +12psi of fuel pressure for every 1psi of boost. so now your fuel pressure under full boost is no longer a nice, injector-friendly ~55psi, but a rough 55+(12*7)=139psi. do you think injectors were made for this? no, they weren't. do you think the walbro fuel pump was made to deliver this kind of pressure? no, it wasn't. it was designed for that much overall flow, but not at that pressure.

hence, people using FMU's often will experience injector death down the road, and unless they are fortunate enough to have a wideband to detect it very early, their engine will be toasted by the failure. i've seen it plenty of times in the Honda world, and Nissan's don't have some godly injectors that are immune to an untimely, overpressurized death.

so go ahead and offer an FMU with it, but as always, i recommend to everyone that asks me about boost not to bother with a kit that offers an FMU unless it's optional. it's ALWAYS a waste of money.

[240Knightrider]

Thanks for the info, I think ill add injectors to that list

But the fuel pump will be good with better flowing injectors right?

[A34D4ME]

WTF? A blower setup is going to require an upgraded fuel pump, injectors, probably an upgraded MAF and will need the ECU reprogramed to change your A/F ratios and timing. FMU - are you kidding?

Is this for an SOHC or DOHC? Because each has a different ECU. For the DOHC you might package it with the Bikirom but for SOHC it will probably be Emanage. You might try the KA-T forum for more info.

How many Lbs are you thinking? I'd aim for about 7 and sell pully upgrades.

[240Knightrider]

WTF? A blower setup is going to require an upgraded fuel pump, injectors, probably an upgraded MAF and will need the ECU reprogramed to change your A/F ratios and timing. FMU - are you kidding?

Is this for an SOHC or DOHC? Because each has a different ECU. For the DOHC you might package it with the Bikirom but for SOHC it will probably be Emanage. You might try the KA-T forum for more info.

How many Lbs are you thinking? I'd aim for about 7 and sell pully upgrades.

7lbs is what ill be running initially. I wont have to reprogram the ECU as long as it stays at 7. Anything else im working on getting a Stand alone system for it.

[A34D4ME]

There are about 100 guys on the KA-T board that blew their motor that way. And that's with a turbo that only boosts under load. You will be boosting in closed loop as well. You will need ECU work because you will be lean as hell and your ECU will try to advance the timing. 7 lb with no tune = KAboom!

Talk to DeviousKA or C-Kwik. Those guys will get you on track with tuning.

[240Knightrider]

well im workin on making the boost flow through the throttle botty so running lean isnt too much of an issue. It will be however if I dont upgrade the injectors and fuel pump. Its not the easiest thing to do but were trying.

[A34D4ME]

well im workin on making the boost flow through the throttle botty so running lean isnt too much of an issue. It will be however if I dont upgrade the injectors and fuel pump. Its not the easiest thing to do but were trying.

Huh? You mean flow through the MAF? Not trying to be an a hole, but I'd read up on some of the principals involved because what you just said makes no sense. You will be increasing air flow through every part of the intake from filter to valve. This is always the case no matter what system you have. The MAF will not correct for 7lb boost and you will need to correct for bigger injectors. Your best bet is probably to just offer the parts and let people handle their own tuning as this should be done on a dyno anyway. Trust me, you will need ECU work at 7lbs. Ask in the KA-T section.

[240Knightrider]

Huh? You mean flow through the MAF? Not trying to be an a hole, but I'd read up on some of the principals involved because what you just said makes no sense. You will be increasing air flow through every part of the intake from filter to valve. This is always the case no matter what system you have. The MAF will not correct for 7lb boost and you will need to correct for bigger injectors. Your best bet is probably to just offer the parts and let people handle their own tuning as this should be done on a dyno anyway. Trust me, you will need ECU work at 7lbs. Ask in the KA-T section.

Haha, yeah sorry about that. I do mean the Maf. I believe you. Im just having a hard time locating a chip of somesort. I just need to do more research. I jumped into this not knowing everything but thats how I learn. I learn by doing and I totally appreciate everyone ones help. I really do, the more you give me the better I am. I do research, ive been reading at work and at home every chance I get to learn all I can. I still dont know where I got throttle body....i need sleep

[hybrid_flyer]

Haha, yeah sorry about that. I do mean the Maf. I believe you. Im just having a hard time locating a chip of somesort. I just need to do more research. I jumped into this not knowing everything but thats how I learn. I learn by doing and I totally appreciate everyone ones help. I really do, the more you give me the better I am. I do research, ive been reading at work and at home every chance I get to learn all I can. I still dont know where I got throttle body....i need sleep

and believe us we very much appreciate all the work you are putting into this. I gladly volunteer my motor for any prototype testing even if I am on the other side of the country

[240Knightrider]

sweet... yeah im gonna sell it to Nico first, I can at least trust the opinions and work from you guys.

[Slo S14]

Nothing, If I want a blower its going to be on a motor with some cubes. For others I guess it would depend on the craftsmanship, blower tim, pulley, and it'd probably have to compete with turbo kits like the greddy for the KA.

[PantherRacer]

that's you lol, ppl have been asking about scd' KA's for as long as I can remember on this board, and now a kits coming out. Supercharger kits don't really compete with turbo kits, it's what the consumer wants,

now if they want boost by way of supercharger and there's no feasible way they might go turbo or vice versa.

[eds13]

when are you looking to release the kit to the public?

[grosspolluter]

$1900 is a fair price to pay.

[Skinsk]

That is one sad design, along with being a waste of money(previously stated) and restrictive unless a series of huge pointless tubing is attached...wow just disgusting any I came up with a much simpler alternative... I do believe someone has come up with this before so I take no credit for it

Oh and I'd pay nothing I's take the parts from the autowrecker down the street and I'd make it myself....just as soon as I buy that tig welder...

[240Knightrider]

Ok, you dont like superchargers what is the point in posting besides the fact you want to voice your opinion when no one really cars that you like a turbo over a supercharger....The title is how much would you pay and it gives you options....

Dont tell me nothing because your going with a turbo...really I dont care.

I plan to release it Somewhere around April and May. Once I get everything straight with distributers and with the guy im getting to fab the parts together for me.

-[email protected]

[PantherRacer]

I think my friend would be interested in one for his 240, I'll keep him updated.

and Skinsk. For your info, it's not my diagram, diagrams like that are always exaggerated to show howthe tubing will go.

follow the link and see how it REALLY looks in real life. go on. there's not a bunch of useless tubing.....go on...

[240Knightrider]

follow the link and see how it REALLY looks in real life. go on. there's not a bunch of useless tubing.....go on...

[95lstegman]

yeah, i'm starting to think you should leave engine management to the consumer. just tell them you'll offer NO warranty unless they get bigger injectors, upgraded fuel pump, and major ECU tuning. and sell the finished product 100% COMPLETE for $1800-$2000. you'll have yourself a goldmine. just make sure you have a good way of getting very fresh or [preferably] rebuilt superchargers, since you're using one from an SLK230.

[240Knightrider]

im not using one from an SLK230

but yeah rebuilt is the route im going....they have lifetime warrantys lol....but I agree with what you said.

[A34D4ME]

Unless you can get a great deal on superchargers, I'd just sell the hardware. Most 240sx people would probably want to piece together their own setup anyway.

[InsanityInc]

Just offer a warranty on your parts, not their engine.

[240Knightrider]

yeah i got the hookup on superchargers

[Skinsk]

alright. look, I never stated that I prefered turbo charging systems over supercharging systems. I was simply showing that there is a less restrictive way to have the best of both the super and the turbo.

and I said that I personally would pay nothing for your supercharger kit, I would simply make my own

and PantherRacer... for your info... I know it's not your diagram, (which may be another reason for it to suck although I have no knowledge as to your artistic abilities. and the 3 seconds I took to put a circle and a line on the end of a picture of a turbo does not count as mine) however if I where to do something crazy like put both a super and a turbo in a vehicle I would probably put the turbo before the super.

[A34D4ME]

That drawing wouldn't even work. The way to do it is to remove the exhaust portion of the turbo and replace it with a pully and gearbox with something like a 1:15 gear ratio to make the compressor spin fast enough.

Anyway, this post is about knightriders blower system. So, back on topic - what type of supercharger are you planning on starting with Knightrider?