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Forced Induction Turbochargers and Superchargers..Got Boost?

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Old Dec 17, 2003 | 05:04 PM
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Arrow Stop the Insanity

You can make the ATI kit work, I did.

I support them 100%!

The Blower rocks! 75% of posts about ATI a day here.


You can get 400rwhp!


Thank you..
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Old Dec 17, 2003 | 05:10 PM
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Default I will consider Vortech SC first

And Greddy TT. I am going to wait a while to see how those kits fare in other cars.
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Old Dec 17, 2003 | 05:20 PM
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Max, do you have a dynosheet of your 400rwhp?
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Old Dec 17, 2003 | 05:25 PM
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Man, ppl go 180 degrees overnight on this forum.
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Old Dec 17, 2003 | 05:28 PM
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Max? Is he back?
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Old Dec 17, 2003 | 05:28 PM
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Originally posted by Enron Exec
Man, ppl go 180 degrees overnight on this forum.
You took the words right out of my mouth
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Old Dec 17, 2003 | 05:35 PM
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Max,

I read your posts over on 350zmotoring about the new pulley and RT cats you installed. Am I correct that you ran the car up to into 9lbs boost without an ECU retune? If so, is that safe to do?

--
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Old Dec 17, 2003 | 05:38 PM
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Originally posted by jeffw
Am I correct that you ran the car up to into 9lbs boost without an ECU retune? If so, is that safe to do?

--
Jeff
No, its probably not...but he's not taking any chances
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Old Dec 17, 2003 | 05:58 PM
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I did I do it was a one time thing I am in comms with TS to reflash but I am awaiting one my Crawford b4 flashing.

Surely you wouldn't hold that against me would you?

I also in comms with another TS ATI car and another A5T car going a different route so I have an open mind. 411rwhp to be exact.
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Old Dec 17, 2003 | 06:09 PM
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So, you did install the 9lb pulley? I thought you said you weren't gonna do that. I'm confused.

411RWHP? Where did you get that number? You said you weren't gonna dyno your car.

Like I said, I'm confused. Can you clue me in.
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Old Dec 17, 2003 | 06:11 PM
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See part two of your sig. I have always said 9 lbs was my goal, in fact it was always in my sig. Ask WD, he has all the details.

I promised WD a Dyno, It's on another board a couple days ago. Where do you get your info and why can't you be happy?

Feel the love? Damned if you do damned if ya don't?
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Old Dec 17, 2003 | 06:28 PM
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Don't get so defensive Max, I just hadn't heard that you did that, because last thing I read from you was that you'd decided against it.
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Old Dec 17, 2003 | 06:29 PM
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Who's WD?
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Old Dec 17, 2003 | 06:37 PM
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Sorry Jesse, I have the flu.

9 lb pulleys were bought in July. I had a mishap due to improper tuning, I decided it was bad tuning researched "did it my way" and started stating my 9 lb 400rwhp goal about 5 weeks ago.

WD is Who's Daddy. He is doing some stuff but doesn't forum pound too much just PM's.
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Old Dec 17, 2003 | 06:40 PM
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P.S. For whatever reason his tranny sticks at high boost levels or at WOT under boost in his A5T, mine doesn't. Thus his different upgrade path.
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Old Dec 17, 2003 | 06:43 PM
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Originally posted by yobri
Max? Is he back?

????????
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Old Dec 17, 2003 | 06:53 PM
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I am 12sec Z I am XAM.... Fughetaboutit.

Anyways, wanna here something wierd. I think I am pulling boost by engine load not rpm's since reflash to TS.

IOW, it used to always be exactly at 4k, now with my new setup I can make 2 lbs of boost at 3200, it's all in how I drive.

Can anyone else duplicate this?
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Old Dec 17, 2003 | 06:57 PM
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I have opened up my web page that has a HQ pic of my pics; just uploaded the 13.4 N/A pic in HQ

IP's are logged so play fair. Password in profile.

Edit add, Jeff no it is not safe like I said don't do what I do. I was watching everything carefully with several guages and was fat.

I am leaner now but not 13.5 like pre BOOM.

Last edited by 12SecZ; Dec 17, 2003 at 07:04 PM.
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Old Dec 17, 2003 | 07:04 PM
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Anyways, wanna here something wierd. I think I am pulling boost by engine load not rpm's since reflash to TS.

IOW, it used to always be exactly at 4k, now with my new setup I can make 2 lbs of boost at 3200, it's all in how I drive.

Max, what are you talking about? Slow down, try typing the sentences so those of us not reading your mind can understand what you're trying to say...

I'm guessing here, but are you saying that your boost pressure is engine load dependant rather than rpm dependant? The boost pressure that can be generated by the compressor is directly related to the engine rpm. Therefore, the boost pressure the engine sees is affected by rpm, but is also by engine load since the bypass valve is vacuum operated.

So if the engine is spinning at a rather high rpm, it still might not be seeing much boost if the load is light and the throttle is barely open. Keep in mind, your boost gauge is most likely connected to the plenum, which is after the throttle body, and the bypass is open. But if the load is heavy and the throttle is open, the engine will see whatever boost the compressor can generate at that rpm.

Now, if you can get the same boost at 3200 that you previously had at 4000, that is the effect of the pulley change. The compressor is now spinning faster for any given engine rpm than it was before, so it will be able to generate more boost throughout the rpm range.

Last edited by GaryK; Dec 17, 2003 at 07:07 PM.
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Old Dec 17, 2003 | 07:12 PM
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I'm guessing here, but are you saying that your boost pressure is engine load dependant rather than rpm dependant?
Yes I am saying exactly that.

Read slower, I am not typing fast.



The boost pressure that can be generated by the compressor is directly related to the engine rpm.
OK, does yours DFMU setup do this because I talked to Jimmy on the phone about this yesterday and his doesn't. Keep in mind I have an A5T rpm's run lower in general unless I WOT. I am talking gradual climbing just creeping my boost guage up to dead center zero then playing with 1-3 lbs of boost after 3k, just experiminting. Can you duplicate this?

So if the engine is spinning at a rather high rpm, it still might not be seeing much boost if the load is light and the throttle is barely open. But if the load is heavy and the throttle is open, the engine will see whatever boost the compressor can generate at that rpm.
OK, I read that carefully and don't think it applies to what I am experiencing if that helps.

Now, if you can get the same boost at 3200 that you previously had at 4000, that is the effect of the pulley change.
I didn't notice this till after the pulley change.
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