Northstar Tuning

[AJxtcman]

Originally Posted by jadcock

I guess I never will get a straight answer...

All I asked was, "will adding more fuel cause a decrease in power"....

You need to realize all the car do not have the same program in them. If i ran 50 VINs and checked the CALs I might find 10 commons and some that are singles or appear just twice and that would be just USA cars.

[CadillacSTS2003]

wheres your addy
ill send this comp out today if you sure u can hack it
do we have a deal?

[eldorado1]

Originally Posted by jadcock

I guess I never will get a straight answer...

All I asked was, "will adding more fuel cause a decrease in power". If your answer is, "no, because today's gas is reformulated and has more additives than it used to and it takes more of today's gas to make the same power than it did on yesterday's gas, and so adding more fuel will restore the power that was lost because of the change in formulation", that's all ya gotta say...

The funny part, is changing the fuel won't do anything.

He says the fuel trim is +20%. That's the PCM compensating for a lean condition by adding fuel. You add more fuel by changing the fuel table and the PCM will add less fuel. In other words, the engine would not see any net change in air:fuel ratios.

[codewize]

GUYS your missing all the points here and not listening to what the man is saying.

Whats he's trying to convey to us is that he has pieces of GM written code that he can employ in our PCM's. He's working on the cross reference for the definition files so he understands them better.

The Tech 2 Scantool is a vehicle to move the reorganised files to the PCM. He has some good things to work with, he sounds like he knows what the goal is he just has to work out the details. He's not 'reprogramming' or 'rewriting' code so to speak, as the others would try to do. He's using libraries of code already written and in use. Just not in our cars.

Stop trying to bash the guy and listen

[AJxtcman]

Originally Posted by eldorado1

The funny part, is changing the fuel won't do anything.

He says the fuel trim is +20%. That's the PCM compensating for a lean condition by adding fuel. You add more fuel by changing the fuel table and the PCM will add less fuel. In other words, the engine would not see any net change in air:fuel ratios.

I see that you are missing a little. Just two cylinders.
Say you are always adding fuel, because of fuel quality. When you are in OPEN loop or WOT you go to a FIXXED fuel strategy. It is set for + or - 5%.
now you are at the same as -20%, because 0% has adapted to 20%.

[eldorado1]

Originally Posted by AJxtcman

I see that you are missing a little. Just two cylinders.
Say you are always adding fuel, because of fuel quality. When you are in OPEN loop or WOT you go to a FIXXED fuel strategy. It is set for + or - 5%.
now you are at the same as -20%, because 0% has adapted to 20%.

WOT follows the LTFT. If the LTFT is +20%, then the WOT/PE fuel is +20%. It's a safety issue. If the FPR fails and the owner doesn't know it, they could do some high speed run and toast a piston.

[AJxtcman]

My access got pulled to day only on TIS2WEB. I created a new way in.
The person responsible needs to realize I can always use another GM techs ID. I also have some engeneer friends that will do me a favor. If I get the phone call I will say I am sorry and then you will not see the down loads I will use The old server disc's Just drop it and let me go on my way. I am only after the old stuff!
All the new stuff is already open.
.
.
.

Q - 99 MPH
S - 112 MPH
T - 118 MPH
U - 124 MPH
H - 130 MPH
V - 149 MPH
Z - 149+ MPH
W - 168 MPH
.
.
QCH..Tire All P235/55R17 BW R/PE ST TL AL3 98H
QDA..Tire All P235/60R16-99S BW, ALS
QDC..Tire All P235/60ZR16 BW, AL3
QD0..Tire All P235/60ZR16 BW, HW4
QLA..Tire All LT235/60R17/E-112Q WS1 R/PE ST TL ALS
QLD..Tire All P235/60R17/X WS1 R/PE ST TL ALS"
QNI..Tire ALl 225/60R16-98W BW R/PE ST TL HW4
QPX..Tire All P225/60R16-97S BW R/PE ST TL ALS
QPY..Tire All P225/60R16-97S WS2 R/PE ST TL ALS
QQX..Tire All P235/60R16 BW AL3 99V
QWM..Tire All P235/55R17-98W BW R/PE STTL AL3

Any other Tire RPO's that I should look for.

[AJxtcman]

Beginning in 1991, the speed symbol denoting a fixed maximum speed capability of new tires must be shown only in the speed rating portion of the tire's service description, such as 225/50R16 89S. The most common tire speed rating symbols, maximum speeds and typical applications are shown below:

M 81 mph 130 km/h
N 87 mph 140km/h Temporary Spare Tires
P 93 mph 150 km/h
Q 99 mph 160 km/h Studless & Studdable Winter Tires
R 106 mph 170 km/h H.D. Light Truck Tires
S 112 mph 180 km/h Family Sedans & Vans
T 118 mph 190 km/h Family Sedans & Vans
U 124 mph 200 km/h
H 130 mph 210 km/h Sport Sedans & Coupes
V 149 mph 240 km/h Sport Sedans, Coupes & Sports Cars


When Z-speed rated tires were first introduced, they were thought to reflect the highest tire speed rating that would ever be required, in excess of 240 km/h or 149 mph. While Z-speed rated tires are capable of speeds in excess of 149 mph, how far above 149 mph was not identified. That ultimately caused the automotive industry to add W- and Y-speed ratings to identify the tires that meet the needs of new vehicles that have extremely high top-speed capabilities.

W 168 mph 270 km/h Exotic Sports Cars
Y 186 mph 300 km/h Exotic Sports Cars


While a Z-speed rating still often appears in the tire size designation of these tires, such as 225/50ZR16 91W, the Z in the size signifies a maximum speed capability in excess of 149 mph, 240 km/h; the W in the service description indicates the tire's 168 mph, 270 km/h maximum speed.

225/50ZR16 in excess of 149 mph, 240 km/h
205/45ZR17 88W 168 mph, 270 km/h
285/35ZR19 99Y 186 mph, 300 km/h


Most recently, when the Y-speed rating indicated in a service description is enclosed in parentheses, such as 285/35ZR19 (99Y), the top speed of the tire has been tested in excess of 186 mph, 300 km/h indicated by the service description as shown below:

285/35ZR19 99Y 186 mph, 300 km/h
285/35ZR19 (99Y) in excess of 186 mph, 300 km/h


As vehicles have increased their top speeds into Autobahn-only ranges, the tire speed ratings have evolved to better identify the tires capability, allowing drivers to match the speed of their tires with the top speed of their vehicle.

[CadillacSTS2003]

ok
anyways
my STS compared to my ETC is a dog
i need to fix that
can you do this or not
and whats the address i need to ship the computer too...

[AJxtcman]

I picked up a PCM for you today. I though I used a 99V tire and it cut at 135.
Could it be that it was on the Hoist?

[CadillacSTS2003]

QQX..Tire All P235/60R16 BW AL3 99V
thats what my car has factory but it has the 135 limiter...
i need the
QWM..Tire All P235/55R17-98W BW R/PE STTL AL3
i also need some of those performance boosts again within reason because i dont wanna risk the engine
and fyi my cars in PA i dont need cali emission...

[CadillacSTS2003]

heres a vin of a 2003 STS W rated with F55 Suspension and 17 inch tires
1G6KY54953U227322
you can use that cars programming to get the W speed rating, adapt the vin to work on my cars computer and do your performance tweaks
does that work????
thanks bro

[AJxtcman]

--------------------------------------------------------------------------------
1G6KY54953U227322


12572913 - Control Module version #1

.............12579808 Version #2 Improved Generic scan tool operation

........................12582111 Version #3 EST circuit correction

...................................12585554 Current software Repair to keep AIR pimp from constantly running.





--------------------------------------------------------------------------------

Part Number ............. Cal.ID# ........... CVN
12585554 ................12585517 ........000075C4
..............................12582127 ........0000FD65
.................................................. .................................................. ..
12582111 ................12582596 ........0000D6EF
..............................12582127........ 0000FD65
.................................................. .................................................. ..
12579808 ................12579839 ........0000B772
..............................12572914........ 00004BD1
.................................................. .................................................. ....
12572913 ................12573177 .........00002554
..............................12572914 .........00004BD1



--------------------------------------------------------------------------------

[AJxtcman]

1G6KY54983U282931

Part Number........ Cal.ID# ...............CVN
12585555............ 12585517.............000075C4
...................... 12582128 ............00005856
.................................................. .....................
12582112.............12582596.............0000D6EF
.........................12582128.............0000 5856
.................................................. .....................
12579809.............12579839.............0000B772
..........................12572916.............000 0D74D
.................................................. .....................
12572915..............12573177.............0000255 2
..........................12572916.............000 0D74D

[AJxtcman]

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