msindi

I was wondering who if anyone had the Upsolute ECu on an X50 car?
I ask because it seems that Upsolute only has one program for the 996TT and does not take X50 into consideration. I know they will do a remap for a small fee if you give them dyno numbers after the original upgrade but the whole cost of dynoing, etc.. adds up and takes too long (downtime, go to dyno, etc...).
If anyone has it on the X50 please share. Also, has anyone dynoed an Upsoluted X50??

RDH

This was my concern.I knew of the success on the 996TT but hadn't heard much on the X50 version.Are you still proceeding?

msindi

RDH - since there is a money back guarantee - YES!! It's like a free trial. If it is really not that great, I will go to the GIAC and understand why it costs a lot more!!
The ECU hsould be back on Tuesday (let's hope it does not rain so I can go out and play)

msindi

Chad,
thanks for the input. I am going to Dyno the car as soon as I get the ECU back and post the results.
Does anyone know if it is a bad idea to go ahead and chip the car since the odometer only reads 1,004 miles???
Also, Chad, I took your advice and bought that book - saying it is excellent is an understatement. As an engineer, the science behind the whole workings of the turbos, etc.. is fascinating.
thanx

cobra06

At 6700 RPM A/F on my car was 12.7, I can dig up the rest of the chart, but it runs in the 12.7-13.0 range.

KPV

Chad,
Slightly off topic........
<img border="0" alt="[offtopic]" title="" src="graemlins/offtopic.gif" /> I will be going for my first dyno test this upcoming weekend. I am a little nervous since I have never seen one or participated in one before. The only performance mod to date is the EP Stage 2. Since I will be using this as a baseline for all future mods, is there anything I should specifically request or know? I assume I want HP and Torque at various rpm's. What about AFR? Can they give me this?
Thanks,
Ken

cobra06

Ken, 2 or 4 wheel dyno?
You can get an A/F ratio, I think they tell you much. It can be done several ways.
Exhaust Gas analyzer wil give an A/F readout
Wide band O2 sensor ( they may need to tap your exhaust)
Using the OBD2 system, readings from stock O2 sensors, I think this is the least accurate, but it is what most in-vehicle gauge's use to give an A/F readout.
IF you bought that little device that plugs into the OBD2 port , check the voltages through the RPM range then convert using this guide.

- 0.97V - 12.1:1 - Very Rich
- 0.88V - 12.7:1
- 0.78V - 13.2:1
- 0.69V - 13.8:1
- 0.59V - 14.4:1
- 0.49V - 14.9:1 - (Stoich)
- 0.39V - 15.4:1
- 0.30V - 16.0:1
- 0.20V - 16.5:1
- 0.10V - 17.1:1 - Lean

bxtrgt

Correct me if I'm wrong, but you should pull the front axles and dyno this on a two wheel dyno, unless they have a four wheel unit with direct coupling between the front and rear rollers. The wrong four wheel dyno can blow up your front diff.

New England Dyno Tuning in Worcester has a new Dynojet and they are very good to work with. They use a wide-band o2 sensor. Don't do any testing without some accurate means of reading the air/fuel ratio.
---------------
Len Cummings
BoxsterGT
Lifetime Rennlister

RDH

OK,This brings me to the conclusion that those of us that are not blessed with an engineering degree or know the intercut details of AFR's will ultimately have to go to a company on the TRUST/referral factor. It boils down to a reputable outfit that stands behind there product.

KPV

Cobra,
It is a four wheel Mustang dyno that has a mechanical coupling between the front and rear. This insures the "apparent road speed" is uniform for the front and rear wheels. As I understand it, you need to worry about the electronically controlled four wheel dynos. This is what AWE Tuning has told me. Do I simply assume they will obtain AFR's for me? Do I assume that since they have a dyno, they automatically also have the ability? I did not buy the CarChip yet (still waiting for the group buy through Stephen(uhhh, Stephen, are we ready to buy yet???). Regarding our OBDII ports, are they standard types? When I went for my State inspection last week, the mechanic said my OBDII port was an odd configuration. Huh? Was he working in the dark ages?

Chad,
Since you expect leaner AFR's across the range with my EP2, can I presume the computer does not automatically adjust them according to air flow? I interpret your comment as meaning that when you increase air flow (by exhaust upgrade) the computer does not adjust the fuel accordingly therefore resulting in a leaner mixture. Right or wrong? I would have thought that the computer is programmed to provide a fixed AFR for each predetermined rpm band (10, 20 whatever) and would modify the fuel "on the fly" to suit the air flow. Isn't that the purpose of a mass flow sensor? Sense the air volume/time and send in the fuel to suit?
My car has 11,000 miles on it, about 10 of which are with the EP2. You think I should still wait? Why?

Thanks guys!!!

KPV

Oh, yeah, on an unrelated matter, since we (Cobra and CJV) converse somewhat regularly, I would be really interested in seeing some photos of your respective cars!! Can you send or post some?

cobra06

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica"> Do I simply assume they will obtain AFR's for me? Do I assume that since they have a dyno, they automatically also have the ability? I did not buy the CarChip yet </font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Down here you have to ask. And find out how they intend on obtaining A/F. If they want to tap new bung in the exhaust for a sensor, if they can use the O2 sensor hole for the cat, or just use a 5 gas analyzer. Good ones have it tied to the Dyno computer for a dyno/A:F read out
The OBD2 port is a standard ISO port, to the left of your knee when in the drivers seat.

Mike/A.W.E.

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">What about AFR? Can they give me this?
</font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">KPV-

You should call me if you have any questions...

Incorporated into our dyno computer is a Motec PLM which will allow us to measure the A/F ratio during your dyno run. Wideband testing is generally an additional charge, but will be done for free on the dyno day.

RDH

Does anyone know of a quality company that's capable of doing the Dyno along with the A/F measurements here in the central Florida area?
Thanks

KPV

Cobra,
I ordered the CarChip today and they will have it in my hands for the dyno test this weekend. As I understand it, I can obtain several different O2 sensor voltage readings. How wold I know which one is the one to use for the AFR correlation?
BTW, where did you obtain the voltage correlations?
Regards,
Ken