Hey guys, I have read in a few places that one of the GM S/C kits comes with a 2.5BAR sensor and not a 2BAR. Can anyone provide a part number for this or know if it is not true?
Thanks
It does, as I said, but now that I think about it, its not really a MAP sensor, its called a TMAP sensor. There is a conversion to a 0-5v output as well since it works with the 02-05 Eco ECU's which take a 0-5v signal. The part numbers are in the GM build book, and thats found all over the place, I think a link is in the performance or eco build faq in the performance section.
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hmmm.
search
.......look for the post...............reflashed solved..........yea im pretty sure its there....yea cause im the one who posted it
*************Yea i spell liek wrong get over it*****************
** If i write in caps its cause im @ work and i can only write in caps cause the keyboard is a retarded CAPS only keyboard.**
Snowman wrote:hmmm.
search
.......look for the post...............reflashed solved..........yea im pretty sure its there....yea cause im the one who posted it
So insted of taking more time to post what you posted why not just copy / paste the link for him?
http://www.j-body.org/forums/read.php?f=40&i=105994&t=105994
Thanks guys, especially shifted. I did search but tried 2.5 BAR and nothing came up so thanks for bring that up. I wasn't doubting you at all just trying to find the part number. Although I have read that it is both a 2 and a 2.5.
no one really knows what rating the sensor is , if they do know they havent posted it
alot of people that are slow at comprehinding what ive said about the TMAP sensor , keep calling it a 2bar
obviously youve caught on that it is higher than the standard 2bar
i know the rdline/cobalt ss/sc the sensor comes from will read around 20 psi with the sensor
and 2 bar reads 14.7psi , so obviously its gotta be rated higher than 14.7 psi
Interesting stuff.
Supercharged Cobalt, ION Redline MAP sensor AC Delco 213-796. Pictures show standard 3 wire GM sensor. Trying to reverse this lookup, the vehicle applications database does not list this sensor on any vehicles. Someone with access to later GM service info might be able to find pressure <> voltage chart for the Ion part. Part no 90423637 doesn't cross to a Delco part.
What is the Bosch number on the four wire sensor in the kit? Looks like 0 251 230 042 The correct number may lead to an OE application which may lead to service information. Or someone on the Saturn Ion forums may have this info. I saw a post from someone who claimed to have factory service manuals for this vehicle.
-->Slow
there is 3 pressure sensors on them
only 1 is a TMAP
the part # was already given for it , in that other post
YEA....
THE 3 WIRE SENSOR MOUNTS ON THE SUPERCHARGER BEFORE IT SEES BOOST AND WILL NOT WORK.
YOU NEED THE BOSCH SENSOR....ITS 4 WIRE....AND IS CALLED A
TMAP
NOT A MAP, NOT A 2 BAR MAP, ITS A TMAP
TEMPERATURE (AND)
MANIFOLD
ABSOLUTE
PPRESSURE
ITS ALL EXPLAINED
HERE BASICALLY IT DOES BOTH, READS TEMP AN MAP
YES ITS 5 PAGES LONG.......READ IT
*************Yea i spell liek wrong get over it*****************
** If i write in caps its cause im @ work and i can only write in caps cause the keyboard is a retarded CAPS only keyboard.**
umm, read it and nowhere do I see that anyone confirms the sensor's range, of course I have been called blind before
I realize its a TMAP but I can't see it mattering whether or not you use the Temp function. I am just looking for a compatible 2.5BAR sensor to use with HPTuners.
well seeing as hptuners hasnt written the program yet............its irrelevant @ this point.
if you want a damn answer call bosch and find out.....its pretty simple. everything is n the thread
*************Yea i spell liek wrong get over it*****************
** If i write in caps its cause im @ work and i can only write in caps cause the keyboard is a retarded CAPS only keyboard.**
Snowman wrote:well seeing as hptuners hasnt written the program yet............its irrelevant @ this point.
if you want a damn answer call bosch and find out.....its pretty simple. everything is n the thread
Holy crap snowman, chill out, since when is it wrong to ask a question in a forum. IT IS NOT IRRELEVENT you can scale the HPTuners map to anything you want and a 2.5BAR sensor is what I would like if possible.
Thanks to those that have tried to help with this, and shifted before I spend money and then time trying to setup a 2.5BAR tune I just want some solid eveidence that it is indeed a 2.5BAR sensor. If someone has the Bosch part number then I have no problem "trying" to contact them.
Why not just buy the darn GM 3-bar sensor that came on the turbo Firebird and call it a day?
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Well thats an option,obviously but a 2.5 would provide better tuning as I have no intentions on running over 20psi boost. Using a 3-BAR sensor would make all readings from 85Kpa irrelevent in the ECU mapping.
I have been doing a fair amount of research on this, and I believe (not saying you have too) that a 2.5 BAR would fit my needs best. Because HPTuners doesn't have the proper 2/3bar mapping (yet, hopefully) every time you go up in sensor size you loose tuning "resoultion". By that I mean your Adjustment points get farther apart in the mapping:
5Kpa adjustments=
1BAR- 0.7525 Abs psi
2BAR- 1.4504 " "
2.5BAR-1.813 " "
3BAR- 2.1756 " "
2BAR tops out at 15psi boost, 2.5 23psi, 3BAR at 30psi
So why use a 3BAR if a 2.5 is available unless you plan on boosting over 23psi?
Quote:
ITS ALL EXPLAINED HERE BASICALLY IT DOES BOTH, READS TEMP AN MAP
YES ITS 5 PAGES LONG.......READ IT
Chill, Bud.
I spent over 3 hours looking for answers. I regiestered for Ion forums and Saab forums. I spent time trying to read pages from Sweded, Germany, and Denmark (Babelfish translations can really suck). I've been viewing online parts sellers pages, ACDelco, DELPHI, GMPARTSDIRECT, Bosch USA, BOsch worldwide, Bosch of Scandanavia. I've tried crossing what I thought was the Bosch part number on Chrysler and Mercedes pages (we have Mercedes Sprinter vans with Bosch and Delco pressure sensors). I've really gone out on a limb to get some info. And you know what? I don't even need one. I'm OBDI and running 3 BAR with my own tune. It doesn't help me out one bit to give anyone else the answer to this question. So please don't chew my head off.
I understand that the paper you have calls that part a TMAP. In the world of GM, a part can have one name in a service bulletin, another in a service manual, another in a parts manual, and another in the aftermarket. It sucks, but it happens. Maybe Bosch calls it a "pressure sensor." Spend some time looking through Bosch books. you won't find a single "TMAP" anywhere. Spend some time looking through any parts books, same story. Even GM's own parts info is geared up toward calling out "MAP" sensors.
The BOSCH part number has not been given. And the GM number you gave doesn't cross over to any other manufacturer's number, so it's not worth a drip for anything other than ordering parts. The Delco number came from an Ion Redline forum but I can't confirm that it's the same sensor. But if it is, then someone might be able to track down service info by using another car.
There is only one MAP sensor on the Redline. MAP = Manifold Absolute Pressure. There are 3 pressure sensors not including the fuel tank pressure sensor for evaporative emissions. The three sensors are the Barometric pressure sensor to get readings for ambient air pressure. This allows the VE calculations to accurately determine air density. There's the Blower Inlet Pressure sensor, which measures any pressure drop between supercharger and air filter (useful for sanity checking the MAF readings) and the actual MAP sensor. Yes, it's important to get service info for the correct sensor It looks like the BARO and BIP are standard Delco sensors.
Quote:
But I see your point I wish they could adjust the table so it has more increments to increase the resolution for me because sticking a 3bar into a 1 bar map will make it very hard to tune in terms of accuracy.
The largest problem for me has been the loss of low MAP resolution. Below 45 kPa my timing only changes if RPM changes, not if MAP changes. The car drives ok but probably wouldn't pass an emissions test. I have the ability to change the code in my ecm and increase the table resolution if I really want to fix this. But unless someone at HPTuners or elsewhere wants to release code or modify tables, you OBDII guys don't have that option. Still, if the S/C tuner software comes out and you can substitute a 3 BAR sensor for the Bosch mystery sensor, that might not be too bad.
-->Slow
Im also looking for a 2.5 bar map... I may just buy a brand new ION one... Since its 3 wire, will it work? *I cant remember if ours is 3 or 4 wire connector*
Edited 1 time(s). Last edited Sunday, March 25, 2007 5:47 AM
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