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Well I'm not sure if this is the whole story...

Posted by: Singletrack on 2003-06-28 22:24:08
Account #: 25380

In Reply to: It's simpler than that. really. posted by Eric Fletcher on 2003-06-28 21:27:55

With regard to the 16G, since it was mentioned and information is readily available. It looks like for a given air flow they can achieve a significant increase in the P/R simply by changing the compressor wheel. Therefore, compressing more air, more air = more HP, with fuel of course.

Looks like a P/R (inside the eff range of course) of about 2.7 or so with the "small" wheel and 2.85 with the "big" wheel. So right there you have a significant increase in CFM.

-st

2008(9?) S5 - ordered 3/29/08
2004 Subaru Impreza WRX STi
2000 A6 2.7T - Sold

"On the run from Johnny Law; ain't no trip to Cleveland."

Thread:

So... How much boost can the stock bottom end take? - Nogaro Baller 2003-06-27 16:37:26 (249 views)

Anybody running that much boost to redline has no idea how too read a compressor map - Eric Fletcher 2003-06-27 22:47:00 (176 views)

Any of you guys Star Trek TNG fans? - Innovator 2003-06-28 05:43:24 (106 views)

Try answering the questions, since you can't you attack. - Eric Fletcher 2003-06-28 08:40:58 (54 views)

Heh. Funny, coming from you. - Dan Calle 2003-06-30 08:02:46 (36 views)

Heh, we called my asst football coach in high school q. He did know a lot of random shit though. - dscottjr 2003-06-28 06:43:16 (32 views)

Was he at least nice about sharing his knowledge with people? - Innovator 2003-06-28 06:56:43 (54 views)

K04s are done at 16psi at 4000rpm? He is talking K04s... - DarinS4Turbo 2003-06-27 23:52:01 (56 views)

K04's just push that flow limit up 1000rpm..... - Eric Fletcher 2003-06-28 00:29:42 (80 views)

and a big16g's max effeciency is @ 14.5psi, yet most dsmers get 340-350 whp out of them.. HMMMMMMMM - Nogaro Baller 2003-06-28 00:37:24 (52 views)

Now impress me and tell me why - Eric Fletcher 2003-06-28 00:43:59 (95 views)

well... - imolavirus 2003-06-28 10:23:57 (76 views)

Close but your overlooking the big picture Pressure is a function, not the answer - Eric Fletcher 2003-06-28 17:21:54 (33 views)

Race gas coupled with the higher boost? - Singletrack 2003-06-28 06:11:48 (28 views)

that's not it. - Eric Fletcher 2003-06-28 08:41:37 (78 views)

In that case, I would guess that they are modifying the housing somehow. - Singletrack 2003-06-28 20:44:56 (38 views)

It's simpler than that. really. - Eric Fletcher 2003-06-28 21:27:55 (56 views)

Well I'm not sure if this is the whole story... - Singletrack 2003-06-28 22:24:08 (32 views)

Your not looking at everything that you need to look at on a compressor map - Eric Fletcher 2003-06-28 23:03:40 (16 views)

Weeeeeeeeeeeell, the compressor wheel is also moving slower on the bigger wheel - Singletrack 2003-06-28 23:08:28 (9 views)

At this point we move to email, Email me for futher discussions - Eric Fletcher 2003-06-28 23:09:25 (8 views)

Oh, man, so lets not share your big secret with others on the forum that may be interested. - Innovator 2003-06-29 06:53:51 (9 views)

Cool - will do, thanks. - Singletrack 2003-06-28 23:15:38 (4 views)

Stop falling for his BS. He is just jerking his own crank, and anyone that goes along with it. - Innovator 2003-06-28 20:48:33 (83 views)

Well I've actually been reading several interesting sites on it with varying - Singletrack 2003-06-28 21:17:52 (45 views)

People learn best by being taught, not by being jerked around. - Innovator 2003-06-28 21:25:58 (39 views)

First of all, I have the book. Second, I'm not begging. Third... - Singletrack 2003-06-28 21:37:44 (36 views)

Please, go right ahead. I'm sure there are a few more hoops he has for you to jump through. - Innovator 2003-06-28 21:39:12 (26 views)

You know man, that is really insulting. For the last time, please leave me out of - Singletrack 2003-06-28 21:55:51 (31 views)

Singletrack, I just laid it out for him, and he still says there is something being left out. - Innovator 2003-06-28 21:59:51 (31 views)

No problem man. - Singletrack 2003-06-28 22:02:13 (24 views)

He's on the right track unlike you. He's understanding what's going on - Eric Fletcher 2003-06-28 21:42:11 (45 views)

Should I just say that the bigger turbo flows more CFM's and any given pressure? Would that be ok - Innovator 2003-06-28 21:44:01 (26 views)

that's not totally true. But it's getting there and part of the equation, not all of it - Eric Fletcher 2003-06-28 21:45:41 (36 views)

Shall I add that the engine needs to be able to allow that air into the cylinder? - Innovator 2003-06-28 21:49:26 (35 views)

Outlet temps do not drop with pressure drop. - Eric Fletcher 2003-06-28 23:00:59 (30 views)

He's just upset because he can't figure it out. - Eric Fletcher 2003-06-28 21:38:46 (26 views)

Figure what out? You don't even have a definative question posted! - Innovator 2003-06-28 21:40:08 (22 views)

try to answer the damn question. People learn by THINKING not having it spoon fed to them - Eric Fletcher 2003-06-28 21:31:51 (26 views)

What a quiff. Just tell the guy already. GAWD!! - Innovator 2003-06-28 15:18:17 (48 views)

that's not the reason, those are parts of it but not the why. - Eric Fletcher 2003-06-28 17:23:13 (48 views)

Re: that's not the reason, those are parts of it but not the why. - Innovator 2003-06-28 20:39:46 (42 views)

It's really easy, ANSWER THE DAMN QUESTION. since you can't you just bitch and whine. - Eric Fletcher 2003-06-28 21:31:01 (27 views)

What is the question Q? - Innovator 2003-06-28 21:33:32 (22 views)

You really did ride the short bus. - Eric Fletcher 2003-06-28 21:34:34 (26 views)

Really.. What exactly are you asking, exactly? - Innovator 2003-06-28 21:37:58 (25 views)

are you unable to read or think? or do you have to have somebody tell you everything - Eric Fletcher 2003-06-28 21:39:59 (20 views)

I've forgotten more than you will ever know. Get real mmkay. - Innovator 2003-06-28 21:41:16 (20 views)

Oh now that's funny. - Eric Fletcher 2003-06-28 21:44:38 (44 views)

Re: Oh now that's funny. - Innovator 2003-06-28 21:47:07 (35 views)

Would you like to see the letter that Audi Sent you... - Eric Fletcher 2003-06-28 23:01:47 (38 views)

I'm tired of your games. You don't know anything unique Eric. - Innovator 2003-06-28 18:57:33 (55 views)

700hp 1800lbs full ground effects is fast. I've raced those, your pig DSM is slow. - Eric Fletcher 2003-06-28 19:42:47 (322 views)

If you're so smart, why do you keep calling the 3000GT a DSM? - Innovator 2003-06-28 20:33:10 (48 views)

the 3000gt (and the dodge stealth) were built by Diamond Star Motors hence DSM's - Eric Fletcher 2003-06-28 21:30:04 (59 views)

3000's and Stealths are not made by DSM. Whatever..Q - Innovator 2003-06-28 21:32:06 (75 views)

They are part of the Dodge/Mit's teaming up, also know as Diamond Star - Eric Fletcher 2003-06-28 21:33:42 (64 views)

mmmmmmm Flowwwwwww :) - MarkS4 2003-06-28 08:56:31 (26 views)

dont mess with me, i'm tall enough to bang your chick in front of you ;) - Nogaro Baller 2003-06-28 01:28:30 (133 views)

Thermodynamics doesn't allow that - Eric Fletcher 2003-06-28 01:36:23 (212 views)

tell me, tell me - Stealth_STFU_Tuning 2003-06-28 01:19:06 (26 views)

Nope too many people here think that they know better and that physics doesn't apply to their - Eric Fletcher 2003-06-28 01:37:30 (76 views)

Any of you guys Star Trek TNG fans? - Innovator 2003-06-28 05:37:38 (56 views)

Why don't you impress us and tell us why the DSM does what it does. - Eric Fletcher 2003-06-28 08:43:57 (56 views)

How about not being a jerk for once in your life and give of yourself? - Innovator 2003-06-28 15:14:13 (38 views)

Still no answer, just arguments, so you don't understand the problem or the solution - Eric Fletcher 2003-06-28 17:27:15 (29 views)

I am more than happy to admit when I don't know something, so please tell me! - Stealth_STFU_Tuning 2003-06-28 01:56:25 (49 views)

Or doesn't have access to the appropriate map. - FunkWeasel 2003-06-27 23:42:22 (35 views)

that depends - how many miles would you like it to last? - MichaelTM 2003-06-27 19:15:31 (36 views)

Stock Ko4's can't run 23 lbs to redline anyway, without going way out of their efficency range.. - Innovator 2003-06-27 18:30:11 (144 views)

Really how do you know that the bottom end can handle 550Hp. - Eric Fletcher 2003-06-27 22:45:34 (92 views)

Well Mr. Q. I rather talk out of it than be one like you. - Innovator 2003-06-28 05:34:45 (80 views)

in all fairness - since when are 50 runs an indication of what an engine can RELIABLY take? - MichaelTM 2003-06-28 10:17:10 (57 views)

Somebody get's it - Eric Fletcher 2003-06-28 17:31:08 (27 views)

So, don't mod your car if you want to last as long as the stock engine would, and use OE prgrammimg. - Innovator 2003-06-28 15:00:55 (49 views)

many shades of gray - right? There's mild modding and extreme one - MichaelTM 2003-06-29 06:20:13 (44 views)

well, that doesnt stop the tuners when making software for the k03's. It will make power, i - Nogaro Baller 2003-06-27 18:37:51 (87 views)

It will stop you engine when you blow a hole through the piston. - Innovator 2003-06-27 18:43:39 (184 views)

Please get a good tuner to do the work.... meaning smooth as stock and HPs out the wazoo. - Hal S4 2003-06-27 20:51:45 (6 views)

With big turbos, it can never be as smooth as stock. - Innovator 2003-06-27 21:13:07 (10 views)

Smooth is relative, how about not surging and missing? How about not overboosting or slamming the - FunkWeasel 2003-06-27 21:20:18 (49 views)

Bingo. Add- or running the fuel sys at 110% regardless of demand. - Hal S4 2003-06-28 05:41:35 (5 views)

Yeah that is weak. I didn't care for the explanation of it either. - Singletrack 2003-06-28 05:47:10 (5 views)

I'm not hating here Rick, but I wish everyone would quit with the "mysterious" and "secret" crap. - FunkWeasel 2003-06-27 19:23:59 (64 views)

Well I want to get it out first before Autogreed dupes it on me. - Innovator 2003-06-28 16:56:38 (16 views)

Oh yeah, can I get a couple of the 15psi checkvalves for a water injection system from you? - FunkWeasel 2003-06-28 17:03:02 (1 view)

That's alright, I understand. Got a *rough* timeframe? - FunkWeasel 2003-06-28 17:00:23 (1 view)

Note to self - scout e-bay for cheap hair-straightening products. Will make a fortune later - MichaelTM 2003-06-27 19:17:49 (5 views)

Heh. I think everyone is giving up on the k04's too quickly. People should focus more - Nogaro Baller 2003-06-27 18:46:12 (49 views)

No one is running K03's that high to redline...every tuner tapers to 1 bar or less that high up. - 2k2S4 :: Indukted 2003-06-27 18:40:51 (46 views)

But a lot of tuners do run the K03 out of their eff range. - Singletrack 2003-06-27 20:22:37 (45 views)

Here is the answer to Erics big secret. - Innovator 2003-06-29 07:18:30 (116 views)

Thanks, but I actually posted info on that above a little while ago. - Singletrack 2003-06-29 07:27:19 (39 views)

We upgrade those turbos all the time, but his question was convoluted as usual. - Innovator 2003-06-29 07:39:57 (49 views)

That's funny. not correct but funny - Eric Fletcher 2003-06-29 09:00:24 (32 views)

why is it incorrect? Larger compressor wheel WILL increase turbo lag - MichaelTM 2003-06-29 11:15:13 (33 views)

Not always - Eric Fletcher 2003-06-29 11:28:49 (42 views)

Oh, so a larger compressor wheel spools just as fast as a smaller one? - Innovator 2003-06-29 09:07:20 (33 views)

Ok Yoda, so a larger compressor wheel spools just as fast as a smaller one? BS. - Innovator 2003-06-29 09:12:30 (34 views)

I see no need to correct and teach you. You already know sooo much - Eric Fletcher 2003-06-29 09:09:01 (58 views)

Q, it's you that think you know more than you actually do. - Innovator 2003-06-29 09:11:21 (12 views)

Re: Q, it's you that think you know more than you actually do. - Innovator 2003-06-29 09:59:01 (8 views)

So rather than actually doing what you say (Ging out to play with your children) you call me and - Eric Fletcher 2003-06-29 09:54:39 (9 views)

Re: So rather than actually doing what you say (Ging out to play with your children) you call me and - Innovator 2003-06-29 10:02:05 (6 views)

reguardless, k04's flow more, it might not be good for them, but they will do it if i tell them to - Nogaro Baller 2003-06-27 18:41:38 (41 views)

that is not good for the turbos - Ray Khan 2003-06-27 18:29:13 (62 views)

Agree...no one knows yet... - pattersom 2003-06-27 17:21:02 (36 views)

I thought System knew, or was that a connecting rod. - Mike S 2003-06-27 17:58:16 (31 views)

Hes MIA.. and he wasnt testing the limits of the motor with that setup. =\ - Nogaro Baller 2003-06-27 18:40:30 (37 views)

No one knows yet. - FunkWeasel 2003-06-27 16:46:44 (29 views)

there must be speculation from all those "never stop calculating" engineers! - Nogaro Baller 2003-06-27 16:58:58 (30 views)

Heh, it'd be presumptuous in the extreme to make an attempt. Seems like a pretty bomb - FunkWeasel 2003-06-27 17:08:50 (62 views)

Looks like i'm going to be a pioneer on a few new ideas, i hope i'm not the first to make it pop ;) - Nogaro Baller 2003-06-27 17:12:20 (37 views)

What are you doing fueling wise? You can't be running K04s if you expect to find the motor's - FunkWeasel 2003-06-27 17:14:53 (70 views)

would be glad to talk to you about it on AIM though - Nogaro Baller 2003-06-27 18:35:58 (31 views)

Sorry I was away from my lab for a bit. Shoot me an email, I'm a slow thinker - FunkWeasel 2003-06-27 19:19:47 (42 views)

i wont post it on the forums. Too many h8ting idiots (like my self) - Nogaro Baller 2003-06-27 18:35:30 (30 views)

use nitrous to find the potential - Mr. Piggie(mike01s4) 2003-06-27 17:28:10 (42 views)

i would liek to talk to you too over AIM. I have a few ideas to bounce off you. - Nogaro Baller 2003-06-27 18:40:53 (32 views)

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