Bypassed CV & raced Mercedes Kompressor
03-28-2003, 01:13 PM
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Bypassed CV & raced Mercedes Kompressor
Bypassed CV the other day and once I got the LBE re adjusted it hits sooner and harder now. Was out testing and came across one of the supercharged Mercedes roadsters. It was a E36,E32? or something like that. I just noticed the "KOMPRESSOR" badge and new what it was. He noticed me as well and came on my side fast and passed by. I was spooled up and in 3rd at about 45-50 then got right on his tail and stayed with him. He pulled some then I hit 4th still staying close on his tail. Hit some traffic and slowed to a red light. He seemed a little shocked that I stayed with him. So was I 
03-28-2003, 06:44 PM
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Mercedes Benz SLK32 AMG. My 951 on pump gas is a bit faster than my SLK32 (my wife mostly drives it). We race occasionally when we're on the road together, so I made sure I got that small advantage... can't let her win hehe. Both cars dyno'd within 1 hp of each other, but the 951's about 200lbs lighter.
The guru stuff must be working well to keep up to that beast... it's no slouch!
The guru stuff must be working well to keep up to that beast... it's no slouch!
03-31-2003, 01:52 PM
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Hey Rage!
Your AMG dynoed with in 1 hp of your 951 or what a stock 951 would have??? I would think yours is ALOT over stock
I was under the impression the AMG was in the M3 level of hp and performance if not more.
Also, we were on a "951 start" (rolling) Can't wait to get my water inj system going.
HIP HIP HUREY FOR GURU!!!
Your AMG dynoed with in 1 hp of your 951 or what a stock 951 would have??? I would think yours is ALOT over stock
I was under the impression the AMG was in the M3 level of hp and performance if not more.
Also, we were on a "951 start" (rolling)
Can't wait to get my water inj system going.HIP HIP HUREY FOR GURU!!!
03-31-2003, 04:48 PM
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Why not just drill it? Dunno how this is done but my car has the CV drilled and with Turbo cup chips, it would have destroyed my previous '89 Turbo with APE Stage II. Fortunately, I was hit by an ugly woman on a cell phone before my new 951 had a chance to put my other one to shame 
The main thing isn't so much the pull power but that the turbo lagg is down allot and throttle response is much better.
<img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />
The main thing isn't so much the pull power but that the turbo lagg is down allot and throttle response is much better.<img border="0" alt="[bigbye]" title="" src="graemlins/xyxwave.gif" />
04-01-2003, 01:31 AM
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Quote by Rage2:
"Mercedes Benz SLK32 AMG. My 951 on pump gas is a bit faster than my SLK32 (my wife mostly drives it)."
Read again, I don't think he has the AMG version of the SLK32
...I could be wrong
But yeah, that AMG is one bad *****
"Mercedes Benz SLK32 AMG. My 951 on pump gas is a bit faster than my SLK32 (my wife mostly drives it)."
Read again, I don't think he has the AMG version of the SLK32
...I could be wrong
But yeah, that AMG is one bad *****
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04-01-2003, 02:37 AM
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Ohhhh, is that how they do it
Thank you for informing my graceful ignorance
but now that I think about it...isn't saying SLK32 AMG the same as saying 951 Turbo?
Thank you for informing my graceful ignorance
but now that I think about it...isn't saying SLK32 AMG the same as saying 951 Turbo?
04-01-2003, 02:51 AM
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Chas: No problem! Almost the same, except that Porsche never called the Turbo the 951. All the AMG benzes are badged as such, plus AMG is a seperate company, so they like to have their name out there. And yeah, they're fast. Almost as fast as the Brabus Benzes... they're the sickest.
04-01-2003, 07:27 PM
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SM,
No, I havn't seen any spikes and I have kept my eye on the boost gauge very closely.
So ALL AMG's are the "kompressor" motors? i.e. supercharged?
No, I havn't seen any spikes and I have kept my eye on the boost gauge very closely.
So ALL AMG's are the "kompressor" motors? i.e. supercharged?
04-01-2003, 08:09 PM
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by sm:
<strong>Have you noticed any boost spikes with the CV bypassed? I'm still thinking about whether or not I should bypass the CV...</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I've bypassed my CV and feed a Reliaboost directly to the wastegate. I do see a very short, small boost spike. The boost initially overshoots to 16 psi (maybe 17 psi maximum) before settling back to 15 psi. It lasts only a fraction of a second. Also, it seems to happen only when I floor it at higher rpm ranges where the boost comes on very quickly.
My understanding is that it is caused by pressure trapped in the line to the wastegate when the boost controller (Reliaboost) closes shut. There is a very small bleed hole in the Reliaboost to drain this pressure but evidently it does not work instantaneously. Danno says that he can supply a Reliaboost with a larger hole to reduce the spike but the boost will build more slowly.
<strong>Have you noticed any boost spikes with the CV bypassed? I'm still thinking about whether or not I should bypass the CV...</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I've bypassed my CV and feed a Reliaboost directly to the wastegate. I do see a very short, small boost spike. The boost initially overshoots to 16 psi (maybe 17 psi maximum) before settling back to 15 psi. It lasts only a fraction of a second. Also, it seems to happen only when I floor it at higher rpm ranges where the boost comes on very quickly.
My understanding is that it is caused by pressure trapped in the line to the wastegate when the boost controller (Reliaboost) closes shut. There is a very small bleed hole in the Reliaboost to drain this pressure but evidently it does not work instantaneously. Danno says that he can supply a Reliaboost with a larger hole to reduce the spike but the boost will build more slowly.
04-01-2003, 09:06 PM
#12
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by Jake951:
[QB...I do see a very short, small boost spike. The boost initially overshoots to 16 psi (maybe 17 psi maximum) before settling back to 15 psi. It lasts only a fraction of a second. Also, it seems to happen only when I floor it at higher rpm ranges where the boost comes on very quickly.
My understanding is that it is caused by pressure trapped in the line to the wastegate when the boost controller (Reliaboost) closes shut...[/QB]</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Thanks for the replies. To offset the spikes, what do you think would be the result of setting the Reliaboost at 14 psi? I'm guessing this will cause WOT situations to run a tad rich, but I generally don't floor it anyways...yet <img border="0" title="" alt="[Wink]" src="wink.gif" />
[QB...I do see a very short, small boost spike. The boost initially overshoots to 16 psi (maybe 17 psi maximum) before settling back to 15 psi. It lasts only a fraction of a second. Also, it seems to happen only when I floor it at higher rpm ranges where the boost comes on very quickly.
My understanding is that it is caused by pressure trapped in the line to the wastegate when the boost controller (Reliaboost) closes shut...[/QB]</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Thanks for the replies. To offset the spikes, what do you think would be the result of setting the Reliaboost at 14 psi? I'm guessing this will cause WOT situations to run a tad rich, but I generally don't floor it anyways...yet <img border="0" title="" alt="[Wink]" src="wink.gif" />
04-01-2003, 09:59 PM
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by sm:
<strong> To offset the spikes, what do you think would be the result of setting the Reliaboost at 14 psi? I'm guessing this will cause WOT situations to run a tad rich, but I generally don't floor it anyways...yet <img border="0" title="" alt="[Wink]" src="wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I think you will still see a boost spike with the Reliaboost set at 14 psi and a bypassed CV if your car behaves like mine. Actually I'm not sure it's a serious problem because the duration of the spike is so short. Under WOT the fuel mapping is designed to run a bit rich. However, I don't think it would get any richer if boost were limited to 14 psi instead of 15 psi, at least not with the MAP sensor. Danno is best qualified to speak to this aspect of the GURU system.
<strong> To offset the spikes, what do you think would be the result of setting the Reliaboost at 14 psi? I'm guessing this will cause WOT situations to run a tad rich, but I generally don't floor it anyways...yet <img border="0" title="" alt="[Wink]" src="wink.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">I think you will still see a boost spike with the Reliaboost set at 14 psi and a bypassed CV if your car behaves like mine. Actually I'm not sure it's a serious problem because the duration of the spike is so short. Under WOT the fuel mapping is designed to run a bit rich. However, I don't think it would get any richer if boost were limited to 14 psi instead of 15 psi, at least not with the MAP sensor. Danno is best qualified to speak to this aspect of the GURU system.
04-01-2003, 10:40 PM
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</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by toddk911:
<strong>SM,
So ALL AMG's are the "kompressor" motors? i.e. supercharged?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Nope, just the 320 (3.2L V6) is supercharged. The "55" motors (E55, S55, SL55, etc.) are 5.5L NA V8s, hand built by individual engineers, they're amazing.
<strong>SM,
So ALL AMG's are the "kompressor" motors? i.e. supercharged?</strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Nope, just the 320 (3.2L V6) is supercharged. The "55" motors (E55, S55, SL55, etc.) are 5.5L NA V8s, hand built by individual engineers, they're amazing.
04-02-2003, 03:42 PM
#15
The new Mercedes AMGs are supercharged. Now you want to talk about some bad cars. The new E55 AMG is a supercharged V8 with 469 hp. The SL 55 AMG is supercharged and has 500 hp. The new S600 is a 5.5L, 36 valve, twin turbo V12 with 500 hp and 590 lb-ft of tq. The new big ol' 4 door S class 600 can run with a new Vette to 60 mph, 4.7 sec, as well as blow its doors to 150 mph.