Kraftwerks Supercharger Owners Thread

[Chad86]

Originally Posted by fteightysix

Not sure about the powerband claim, but if 300 is your goal on E85 then a C30 will more then do that. my C38 on E85 is 417. We recommend a C30 for most applications. Only those chasing the high HP numbers do we mention a C38. I believe a few pages back someone was at 360-380whp on a C30 on E85. A built engine is where this C38 would really shine..

-Thomas

Originally Posted by enivid

I saw a C38 Dyno making 300whp. Pure lag compared to the C30 making 280whp. Not worth it. Get a turbo if you want all that lag.

Originally Posted by Sellout

As I said, if they were at the SAME horsepower level, the powerband of the smaller unit would be better. You can see in that graph that the boost curve of the smaller unit is more linear. I also said it would be a small difference, but that it would be a difference. On my monitor there's 2mm between the boost curves at 2000rpm, and 5mm between them at >7000rpm. The pink curve is pulling away from the blue one as RPM goes up. THIS IS EXACTLY WHAT I'M TALKING ABOUT.

Show me a C30 and a C38 both at 300whp on E85 and I would bet money that the C38 will have slightly more area under the curve, all else being equal.

From what I have read so far, I gather I can more easily reach 300 whp and beyond on pump gas by running the C38, correct?

[Triumphrider]

That's correct, your pretty much limited to 300ish worth the stock fuel system. The c38 does seem to out pull the 30 by a small margin all through the Rev range though.

[Sellout]

Originally Posted by SPCorBUST

thats honestly the most baffling comparison. not sure why you would want to do that.

you might however want to see these start at the same place to see what additional hp is being made and how much sooner. the dyno already roughly does this and better yet tells us the real story, but just for hypothetical purposes, if we advance the C30's graph by roughly 100rpm, so that they both start at 50hp, you can see that there are marginal gains from the C38 up until about 5600rpm, when it starts to increase the gap and hits 275hp roughly 600rpm sooner. in general a nice point as well is that it looks like the C30 might have some difficulty getting to (and maybe very far past) that 300hp goal anyway. moving past it not being relevant to the goal, but getting to it, yes, very pertinent.

seems like the bottom line is being able to make his 300hp goal easier, earlier and faster on a C38, with more left on the table if he gets the power bug.

Only because you apparently didn't understand what I was saying when you decided I must be wrong.

This all started with someone who said he wanted 300whp on E85 with the C38. We already know you can make 300whp on E85 easily with the C30. If all you want is 300whp on E85, you don't need a larger head unit.

If you don't like the comparison I mentioned, do it this way. Move the C30 line up so they peak at the same number. THERE IS NO POINT WHERE THE C38 IS A BETTER CHOICE UNTIL YOU RUN OUT OF CAPACITY WITH THE C30

[FirestormFRS]

You're wrong, he's right. Now stop arguing in this thread.

[Sellout]

Originally Posted by FirestormFRS

You're wrong, he's right. Now stop arguing in this thread.

I'm not wrong. But thanks for adding something useful to the discussion.

[post_break]

I get what he's saying. He's saying if you're shooting for 300HP on E85, you can do it on the C30. If that's your end goal, then the C30 makes sense. Why leave extra boost on the table if you're not going to go for it?

Why stick a watermelon turbo on your 2JZ and hit 600HP when you can get the same from a hair dryer.

Now if the C38 is the same price as the C30 I guess you could get the C38 for future proofing.

[2016 Camaro SS]

Keep it simple:

c30 - Mild build with pump gas, moderate with e85, stock internals, fuel pump, and injectors with e85. Suitable for MANY. Capable of around 375 whp on e85. 275-290 on 91/93 octane.

c38 - Batshit crazy. Built engine, lower compression, 1000cc injectors, fuel pump, smaller pullies, new rear end, new transmission, thicker rubber, spinning all over the damn place because you can't grip. Possibilities endless, hopefully not in a ditch somewhere.

[SPCorBUST]

Originally Posted by Sellout

Only because you apparently didn't understand what I was saying when you decided I must be wrong.

This all started with someone who said he wanted 300whp on E85 with the C38. We already know you can make 300whp on E85 easily with the C30. If all you want is 300whp on E85, you don't need a larger head unit.

If you don't like the comparison I mentioned, do it this way. Move the C30 line up so they peak at the same number. THERE IS NO POINT WHERE THE C38 IS A BETTER CHOICE UNTIL YOU RUN OUT OF CAPACITY WITH THE C30

I did understand, but I'm beating a dead horse with you. Moving on...

[Chad86]

Originally Posted by post_break

I get what he's saying. He's saying if you're shooting for 300HP on E85, you can do it on the C30. If that's your end goal, then the C30 makes sense. Why leave extra boost on the table if you're not going to go for it?

Why stick a watermelon turbo on your 2JZ and hit 600HP when you can get the same from a hair dryer.

Now if the C38 is the same price as the C30 I guess you could get the C38 for future proofing.

Originally Posted by 2016 Camaro SS

Keep it simple:

c30 - Mild build with pump gas, moderate with e85, stock internals, fuel pump, and injectors with e85. Suitable for MANY. Capable of around 375 whp on e85. 275-290 on 91/93 octane.

c38 - Batshit crazy. Built engine, lower compression, 1000cc injectors, fuel pump, smaller pullies, new rear end, new transmission, thicker rubber, spinning all over the damn place because you can't grip. Possibilities endless, hopefully not in a ditch somewhere.

I agree it would make sense to start with the C30 and then later on if I wanted more HP, then upgrade to the C38. In my situation I have been offered a better deal to go with the C38. So would this be a mistake if I am currently only aiming for 300 whp on 94 octane, without a built engine?

[post_break]

Originally Posted by Chad86

I agree it would make sense to start with the C30 and then later on if I wanted more HP, then upgrade to the C38. In my situation I have been offered a better deal to go with the C38. So would this be a mistake if I am currently only aiming for 300 whp on 94 octane, without a built engine?

I can't comment on that. You'll have to wait for others more knowledgable to chime in.

[2016 Camaro SS]

Originally Posted by Chad86

I agree it would make sense to start with the C30 and then later on if I wanted more HP, then upgrade to the C38. In my situation I have been offered a better deal to go with the C38. So would this be a mistake if I am currently only aiming for 300 whp on 94 octane, without a built engine?

Personally, I think starting with the C30, driving on it for a while, play with e85 and see how the car actually drives and feels is the most important. Don't get lost in the numbers game. You can always upgrade to the C38 when you are ready for it.

C38 is just more upfront cost for the ability to go to those levels where you need more severe upgrades to support it. It may be way more than you actually need. It really comes down to personal preference and what you want to do. The C38 is designed for those individuals who want 400+ whp and intend on doing those major upgrades to their engine.

I'm trying to understand how you are getting the C38 cheaper than a C30. I'm currently trying to sell my kit since I never got the chance to put it on my car unfortunately and it's a pretty good deal.

[Triumphrider]

I went with the c38, simply because to my door it was $500 cheaper than the c30

[DAN_BRZ]

i have a few questions hopefully you guys can help me out

1) i currently have the cusco AOS installed on my car
http://www.ft86speedfactory.com/cusc...-type-716.html
is this can designed for F/I applications or would i be better going with something else?

2) would upgrading injectors and fuel pump make reaching 300+ more obtainable on 94? or is 300ish the max without going e85?

3) what oil is everyone running and what weight? would 0w20 be sufficient for a DD with 1-2 track days a year or something like 5w30 300v be a better option? i currently run toyota 0w20 as i get it for dirt cheap threw my work and its a pretty decent oil.

[2016 Camaro SS]

Originally Posted by Triumphrider

I went with the c38, simply because to my door it was $500 cheaper than the c30

Kudos on that one!