Impreza2RX7

I was going by this newbs example. A FPR and S-AFC sounds ok if used with a wideband, but actually, how much with this cost to do reliably?

SonicRaT

iTrader: (6)

About $500 more? I use a s-afc and wideband to tune my 6-port turbo, and the whole project is well under $2300 (including car/plates/registration), oh, and it runs 12's, hehe.

Impreza2RX7

Damn, you must be a deal seeker, no way you could do that with all new parts.. I'm at probably 8K including the price of the car, and it's prob a high 12 car..

SonicRaT

iTrader: (6)

LOL, a haltech will do that to ya! I got the car for free, and the motor cost me $300, so yeah....

shiftnmadkwik

are you really idleing at 1800 rpms!?!!
or is that just a break in. i cant see it tolerable to idle that high, i mean damn, my 73 vega gt with a huge cam idles at 1000!

poor_red_neck

Only read the first page.. but I know where this thread is going anyways.

Dan,

Read over the kit page. While I'm with everybody else about the whole 60 percent duty cycle (that number is too low) I think your kit is absolutely beautiful. As others have pointed out, it looks like you guys really did do your homework, and I'm betting that at 4K... you're not making much off of it right now.

Not a complaint about the price, as I'm sure its "worth it", but there just aren't many guys out here that can afford that. Considering more than 60 percent or so of the FC guys are under 25... I know why many things are made for the FC, and when delivered... nobody buys. Never ending cycle.

If I had money to throw around like JimLab or somebody... that thing would be at my doorstep ASAP. But, since I live off 1.4K a month, pay rent, and 180 bucks a month in insurance... that's just not feesable, and an eaton m90 plus some ghetto home brew **** will just have to do

Again, MANY compliments on your kit, it looks very well made, but unfortunately we're all a bunch of poor bastards (heh... hence my screen name).

beefhole

iTrader: (29)

Considering many of FC guys also payed less for our cars then the SC kit price...

RX7FROMCAL

well based on talking to the guys at atkins i was told 176 to the wheels not the fly , so if ya take the 15 to 20% that it looses from the fly to thr rear and add that back on, your talking to 211 to the fly, plus they said with the bigger injectors and fuel pump, 35 % more . so taking the 211 times the 35% more of what they say. thats close to 74 more hp to the fly by adding the injectors and fuel pump, so that would take you to 285 to the fly, plus what i have done . thats how i came up with 305. now either there blowing smoke up my *** or what, i dont know!!!! like i said ive talked to gary several times and andy, this is what im getting soooooooooooo!!! im just going on what ive been told guys, i came across this forum to help me with the complications we have come up against with the install, soo likei said , what i have said is what i was told . take it for what its worth, my kits being put on as we speak , so i will get i dynoed . you can bet on that ,andwe shall see if there blowing smokeup my ***, lol any inpute will be gladly taken , thanks

RX7FROMCAL

This Supercharger EFI Kit has the capabilities of bolting right onto your 86-91 Non-Turbo Mazda Rx7 13B Engine. This Supercharger EFI Kit will give you approximately 176 horsepower using your stock fuel injectors. If you are looking to get more horsepower in your rotary, you will need to increase the flow capacity of your fuel injectors. Using your stock Mazda Rx7 13B ECU, we estimate you will get 35% more horsepower at the wheels by increasing your injector sizes.
ok, heres how i got 305 to the fly, based on 176 to the fly . taking in mind i added 20%back on from the loss to the rear end, that puts ya back up to about 210 to the fly now, and when u take the 35% more by increasing the injector and fuel pump size, i took the 211 times 35% and got 73.85 mnore hp to the fly, that give ya atotal of about 284 now. plus what i have done to my car before the supercharger, with exhaust , header , mufflers , im looking at about 20 hp there. so thats how i got the 305. if im wrong then i stand corrected , please let me know if im wrong here. thanks rx7fromcal

poor_red_neck

I really think they need to post some dyno sheets... if they've been using this system for almost a year...

RX7FROMCAL

im hoping the 1800 is break in, if not thats not gonna be good for my engine!! well shall see

SonicRaT

iTrader: (6)

Now take into account the ammount of drag that supercharger yields, and subtract that from your total. I'm guessing ~260

RX7FROMCAL

well i just got off the phone from atkins rotary , talking with gary, i wasnt mistaken with my numbers , lol he said my figuring was correct based on what i have and the number they put out, gawd i was catching alot **** for that post, sooooooooooo , again i will put the dyno slip on so you guys can judge for your selfs!!!! cyaaaaaaaaaa

pianoprodigy

If this kit can make 260-300 RWHP, I'll be buying one. I'm just waiting for the dyno chart. I talked with Atkins a while back both on the phone and in this thread, and I still have seen no dyno chart.

My 90 Vert has a streetport, manifold porting, K&N Intake with heat shield, RB Race Pipe, RB Cat Replacement Pipe, RB Catback & S-AFC II. If all I need is the S/C kit, injectors, and a fuel pump to make around 280 RWHP, sign me up.

RX7FROMCAL - Get that thing on the dyno! I hope to be impressed!

SonicRaT

iTrader: (6)

That's funny, considering a turbo that is more efficient, running more boost, on the same setup, with lower intake temps (intercooled, etc), won't even yield 300rwhp. Not even my m90 setup will get me to 300rwhp, did they use some other charger on this setup? Because all the numbers for their chargers surely wouldn't have added up to 300, unless they've got a charger that's flowing more cfm?

Aaron Cake

iTrader: (1)

Another thing that just occurred to me is that Mr. Atkins has been working on rotaries since before most of the posters in this thread were born.

Obviously, the people in this thread complaining about the price are NOT the target market for this supercharger kit.

rotarygod

iTrader: (1)

Not every turbo is efficient. Admittedly neither is a roots supercharger, especially a 2 lobe nonintercooled one like Camden's. The stock T-II turbo can't even flow enough air for 300 hp. Maybe at the flywheel it can but that is seriously pushing it. The exhaust side of the stock T-II turbo is just an atrocity. Terribly restrictive. Even a fairly inefficient supercharger can make good power with a nice set of headers. A properly tuned exhaust header on a supercharged car will easily offset alot of the inefficiency of the supercharger in comparison to a turbo. It isn't hard to get anything to work better than a stock T-II turbo. Your M90 should actually be able to outdo it if done properly. They flow more air than you think they do. If you tune it right and use an intercooler, you can probably get 300 hp on a ported motor. I'm not arguing that the Camden kit can get 300 hp. They claim that 300 is possible with a ported motor but the only dyno numbers they have ever admitted to, have only shown up to about 276 fwhp or so. The M90 is a far more efficient blower. I understand that a properly designed turbo system is more efficient. I am just making the statement that not all turbo systems are.

When I rode in Codeblue's car at Sevenstock, it had a ton of low end. It came in right off idle. That alone made it way more fun that a T-II at low rpm's. It would be a blast in an autocross or as a fun little street car. As the rpm's rose though, you weren't pushed back into the seat any more. It was like you had an initial low end kick and then it just stayed there. It wasn't like a turbo where you start moving and the faster you go, the harder you get pushed into the seat. It felt more like a Mustang GT. Off idle torque but nothing as you get faster. Still fun though.

88IntegraLS

The v8 feeling can be dealt with using a positive disp. s/c + a large streetported or bridgeported rotary, bwahahaha, I'm planning a lysholm compressor + extend ported 6 port S4 block, mmmm.

SonicRaT

iTrader: (6)

Well, the m90 is roughly good for about 300, at that's pushing the m90, this is why i have such a hard time believing the number they give. Oh well, we'll see!

RX7FROMCAL

well the sc in sounds like a bat outta hello when its running, lol so far we are hitting 10lbs of boost, but the high end seems to be knocking when getting into it, so today we are gonna hook up a fuel preasure gadge and see where its at there, doesnt seem like its getting enough fuel , but we shall see. then theres the idle from what im told most idles on a sc have some what of a surge , and with this one if ya gas it real quick and dont feather donwn off the peddle it dies, sooooooo as u can see still working out the small crap , but over all my car has much more ***** then it did , will keep ya posted . thanks rx7fromcal

SonicRaT

iTrader: (6)

Is that on stock injectors still?

RX7FROMCAL

450 prime, 650 second, cars doing good so far havent pushed to hard just yet , just getting the feel of the car breaking in the belts, and so on. so far i like what i feel alot more grunt to it loooooooooooooooooooot more!!!! will keep ya posetd

pianoprodigy

<Leading the crowd in a chant>Dy----no Dy----no Dy----no</Leading the crowd in a chant>

SonicRaT

iTrader: (6)

What's the boost level they recommend on the stock injectors then? 3psi?

shiftnmadkwik

so its stalling off a 1800 rpm idle ?
did you do tb mod?
and are you running cali 91 octane **** water?