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Supercharger boost pressure
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Author:  gator70 [ Fri Oct 10, 2008 11:46 pm ]
Post subject:  Supercharger boost pressure
I tried searching for my answer and couldn't find anything. I have only had a SC Grand Prix before and the boost gauge was just the LED bar. This car that I just aquired (2000 SSEi) has the dial gauge, while idling and light driving the gauge reads well below 0. my guage reads in KPA with the range -70to 70 10psi to 10 psi. Anyway my question is where should I be sitting on the guage when idle/light throttle. The gauge does rise to 5-8psi under hard excelleration. Is this normal, is the guage fubar, or do I have mechanical issues. I still have 5000k warranty and would like to resolve this before the warranty is up. If it is problem.

Thank-you for the help
Gaylon
Author:  harofreak00 [ Sat Oct 11, 2008 9:56 am ]
Post subject:  Re: Supercharger boost pressure
Your gauge is acting 100% normal. When idling/light acceleration, your car is not using any boost, its under vacuum, thats why the gauge shows less than 0. The actual gauge is much nicer to have compared to the GP's worthless attempt. Under WOT, you should be seeing 5-8lbs, just as you are. Start modding and you can peg that gauge :twisted:
Author:  00ssei [ Sat Oct 11, 2008 12:01 pm ]
Post subject:  Re: Supercharger boost pressure
Gaylon, i had the same issue, i thought my SC wasnt working when it was below 0 at idle. But members from here told me that the most it can go when you floor the gas pedal is like 7. Like Harofreak said, if you mod that bad boy, you can peg it. I havent moded anything yet, but am planning on doing a little some some here and there. I just dont have the money know.

I was wondering, what are the simpliest mods that are common for a 2000 SSEi. I just want to mod simple stuff, nothing big. Harofreak, i know you must know alot about this so can you tell Gaylon and I what to start with and how much are the estimate prices for them.
Author:  danthurs [ Sat Oct 11, 2008 12:14 pm ]
Post subject:  Re: Supercharger boost pressure
180* thermostat, $10 or so
Gutted air box, cost of filter, about $50 or so.
Pulley change, 3.5" about $60 need a puller or know someone close with one.
PCM upgrade, $100 plus case learn.
Author:  00Beast [ Sat Oct 11, 2008 11:47 pm ]
Post subject:  Re: Supercharger boost pressure
00ssei wrote:
I was wondering, what are the simpliest mods that are common for a 2000 SSEi. I just want to mod simple stuff, nothing big. Harofreak, i know you must know alot about this so can you tell Gaylon and I what to start with and how much are the estimate prices for them.


Please, don't jack this thread. Start a new thread and ask again.

Thanks.
Author:  00ssei [ Sun Oct 12, 2008 12:15 am ]
Post subject:  Re: Supercharger boost pressure
your always, coming onto me dude. Get off. :angry4: your the only one tracking my posts and always say "stop jacking his thread" well, its none of you bizness to be saying that. [-X Its not your thread so shutup. If gator70(gaylon) had a problem with it, he would of told me or post it, so you should stop coming on to me like that.

I was just posting a similiar prob i had which you do and alot of other members do. Plus that info will also help gator70.
Author:  harofreak00 [ Sun Oct 12, 2008 12:30 am ]
Post subject:  Re: Supercharger boost pressure
Both of you are out of line.

Beast, you are not a Moderator, so don't act like one. That's what the "Report this Post" button is for.

00ssei, your attitude is not appreciated. You are posting off topic, boost pressure has nothing to do with first mods. Check Techinfo for first mod suggestions.

Both of you, don't post anymore in this topic.
Author:  gator70 [ Sun Oct 12, 2008 11:51 am ]
Post subject:  Re: Supercharger boost pressure
Thanks guys, if I drop to the 180 thermostat, will I still get enough heat for our frigid winters up here? Are the cat's the only real exhaust upgrade that I need to do. I have briefly looked around and haven't found a cat-back setup.

Gaylon
Author:  gator70 [ Sun Oct 12, 2008 11:53 am ]
Post subject:  Re: Supercharger boost pressure
Sorry me again, thanks for the info on the SC gauge, it always worries me when I buy a new vehicle. Its nice to know that it is running right. I tend to get a little particular with my vehicles, I like them to be running like new.
Gaylon
Author:  2000Silverbullet [ Sun Oct 12, 2008 12:07 pm ]
Post subject:  Re: Supercharger boost pressure
Ah, you are just like most of us Gaylon. :laughing3:

Got to have it running and looking just right. :)

I live in a similar climate to you......well maybe a little warmer. :P

You might run into problems with your car throwing an SES light if you switch to the 180 stat and drive less than 20 minute trips in cold weather. There is a built in trouble algorythm in the computer to tell you if the thermostat is stuck open. If it takes longer than a certain amount of time for the engine to warm up to 180 F then it trips the service code. It can be programmed out but that will cost you the loss of your computer for two weeks cause we're in Canada :roll: (and vehicle if you don't have a spare) and $150.
You can fool it by intalling a ZZP sensor for $50 :wink:

I think you can safely switch to the 180 as long as you don't drill a hole larger than 1/16"
Do some research in the Forum archives and Techinfo to see what I'm talking about.

Happy modding and I can't wait to hear your first response if and when you get to pop on a 3.4" pulley. :twisted:
Author:  GonneVille [ Mon Oct 13, 2008 12:05 pm ]
Post subject:  Re: Supercharger boost pressure
If you switch to the drilled 180, and you have trouble warming up, just go ahead and switch it to an undrilled 180. It'll warm up pretty quick, but won't get you much over 180. That's plenty of temp to run your heater hot enough to blowdry with.
Author:  danthurs [ Mon Oct 13, 2008 12:10 pm ]
Post subject:  Re: Supercharger boost pressure
I'm in Wisconsin, and it gets flippin cold here. I'm running a undrilled 180* with no problems at all.
Author:  harofreak00 [ Mon Oct 13, 2008 2:00 pm ]
Post subject:  Re: Supercharger boost pressure
danthurs wrote:
I'm in Wisconsin, and it gets flippin cold here. I'm running a undrilled 180* with no problems at all.


But you have a PCM designed to run on a 180 stat
Author:  danthurs [ Mon Oct 13, 2008 2:26 pm ]
Post subject:  Re: Supercharger boost pressure
I sure do. But I ran for a while without that. I did have a fair amount of flucuation when not moving. But still had no problem heating up.
Author:  Archon [ Mon Oct 13, 2008 4:27 pm ]
Post subject:  Re: Supercharger boost pressure
The "problem" is DTC P0128 which monitors how long it takes the coolant temperature to reach the thermostat regulating temperature. If it does not meet the preset criteria, the service engine soon light is lit, and that code is stored. I don't believe that code existed prior to 2000. This is a brief description.

The PCM monitors total accumulated air flow to determine if the engine run time is sufficient to reach engine operating temperature. If the coolant temperature does not increase normally or does not reach the regulating temperature of the thermostat, diagnostics that use engine coolant temperature as enabling criteria, may not run when expected. If engine coolant fails to reach a preset target temperature before a calculated air flow is accumulated P0128 will set.
Author:  2000Silverbullet [ Mon Oct 13, 2008 7:17 pm ]
Post subject:  Re: Supercharger boost pressure
Mine used to set that code all the time before I had the PCM reprogrammed. I simply cleared it with my cheapo scan tool. It really doesn't harm the engine in any way. It's just used as a diagnostic tool. :wink:
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