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Discussion Starter #1
http://www.smileycentral.com/?partner=ZSzeb001_ZS When Hans was here and we were in Santa Fe, NM, we had an engine light that wouldn't go out so we took it in to Cadillac and they found a code for a sticky valve in the supercharger..............Well I got another engine light and found the same problem again, so their going to put in new one in when they can get one.
None available from coast to coast. God knows when, but it's still drivable.
Bob
PS This is not a complaint, just information damn it's hot






 

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Are they talking of a bypass valve? In some applications, the bypass valve will open when the blower over-revs or over-pressurizes, then there is a delay in getting it closed. If that happens you will notice a marked reduction in power until the blower can achieve positive boost. The Ford Cobra and the GT both have had such issues, some of the Cobra guys (me included) resorted to a re-plumping of the vacuum lines used to activate the bypass. On stick shifts it's a pain, once that valve opens you lose 100 horses real quick.
 
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Discussion Starter #3
Could have been a sticky bypass valve, I have a tendency to blurb the first gear because second gear comes so damn quick. I did it yesterday with an SL500 and got egg all over myself. Once I got control of emotions I pulled along side at a light and didn't blurb this one. He should be at the Caddy dealer asking about the V series about now.
 

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They usually set the redline so the blower does not reach the critical point where the valve activates, however in higher temps and repeated runs to the redline it sometimes kicks in. I had a 2002 Ford Lightning that did it almost every time I took the truck to Fomoso. I would pull up, do a nice burnout not realizing the damn valve opened. Light turns green, truck would bog off the line. Once I plugged the line, we were back to 12 second runs. All of Ford's applications where they use a supercharger utilize the same bypass method i.e., Lightning, Cobra, GT and even the S/C'ed Jag. I would guess GM is using a similar system. Someone will need to locate the line that feeds the activaor seleniod and unplug it to see if that helps without throwing a code.
 

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standby said:
I wonder what they are promising from this chip. I'll check it out.
--we can turn up the boost, make that transmission shift right, remove speed and rev limiting, while improving fuel economy, and improve overall driveability.
 
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Discussion Starter #8
That's nice Mike but does the warranty go in the toilet and would you do it?
sent you a personal message
 

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If you remove or bump up the rev limiter, you may compound the problem with the S/C bypass valve.

Turning up the boost would require pulley swaps, since it is not determined by anything electronic (as far as I know).

Increasing boost also requires increasing fuel flow to make sure the motor does not lean out.

Ah, the slender tightrope one walks when you want more power - at the cost of your warranty! I wish I had a nickel for every 03 Cobra owner I know (including myself) who had their power train warranty voided by swapping pullies in the S/C or crank, coupled with performance chips and free-flowing exhaust systems. My setup pulled an additional 73 rwhp from the motor, but required new injectors, and even higher octane fuel than the factory setup.

But let's face it, 73 rwhp is lots of horses - the walk on the tightrope was worth it for me, even though I broke an axle and was forced to replace the factory radiator and fan to help with the heating issues associated with that much extra boost.
 

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I would guess one of the hand-held tuning devices will catch up with the XLR and "V" crowd soon. The nice part about them is the ability to capture your factory tune and replace it with a customized version. If you need to visit the dealer, you simply switch back. They will never know and some of the custom "off the shelf" tunes are pretty good, pulling 20-30 horses over the stock setup with the ability to turn off certain factory defaults, including cooling fan settings, rev limiters, shift points and firmness, etc.
 
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Discussion Starter #11
mswaim,
443 is enough for me, maybe a new cool air intake to help this beast breath will be sufficient.
see my personal e-mail to you.
Bob
 
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Discussion Starter #14
Snoop

SNOOP
I told you along time ago I'm very impressed in your reading between the lines. Pretty smart guy.
All I can say is life is to short

:grouphug all around.

aviator said:
As I live and breathe.....

:grouphug

I thought I'd never see the day. :eek

:jester

:party
 

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There are two other, non-invasive routes you can try with the V to pull more power out of it.

One would be a simple Bottle-in-a-Bag nitrous setup, utilized very successfully by the Ford crowd. I used one with a 25 horsepower jet on both my 2002 Lightning truck and for a short while on my 03 Cobra. The real benefit is not the added oxygen (nitrous), it is the cooling effect the injected nitrous has on the intake charge. Cooler air is more dense and makes much more power without any fear of leaning out the mix to the point of melted plugs, pitted pistons, etc. The system is fool-proof, or at least idiot proof - I'm living evidence of that!

http://www.compucarnitrous.com/TEST/kits/hidden10lb.htm

The other alternative is an old-fashioned water/alcohol injection system. It also will cool the air intake charge, increasing volume, which makes power.

http://www.snowperformance.net/

Both systems were used successfully in the aviation field for many, many years and is still used by the aviation racing crowds.
 
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Discussion Starter #16
This would be nice to have when you pull up to some of those unsuspecting 500 HP cars and do a number on them. If I'm doing 4.3, in 0 to 60, and I truly believe I am, especially with the exhaust bafles wide open. what could I do with one of the HP models?
 

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I believe powering up the V would be easier than appying it, since you are limited in the traction department. You guys need wider (and stickier) tires. If I had to choose between the two models, I would pick the water injection system. Safe, reliable and the cops won't be looking for that nitrous botle when they stop you for speeding.
 

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SNOOP? Not I!

standby said:
SNOOP
I told you along time ago I'm very impressed in your reading between the lines. Pretty smart guy.
All I can say is life is to short

:grouphug all around.
You're giving me WAY too much credit.

I'm so prouda you guys!
(sniff, sniff) (He says while dabbing a little tear from the corner of his eye.)
:D :D
 

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aviator said:
You're giving me WAY too much credit.

I'm so prouda you guys!
(sniff, sniff) (He says while dabbing a little tear from the corner of his eye.)
:D :D

I just can't take anymore of this:puke
 
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Discussion Starter #20
See what I mean.................I didn't know it was illegal to have nitrous. There's enough illegals around without me going illegal too.
Mike doesn't want to answer me about going to Fontana
Maybe we should go and race and then have dinner afterwords.
OK Aviator or Mike, no.............you can't come and take pictures
 
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