Decided to start a new thread on this make it easier for those who want to follow the results.

Just finished some b4 runs using the software that came with the ODBII scanner. Found that it did not matter which gear I was in for the HP/Torque results. Multiple runs were very close in results except those with missed shifts on shutdowns due to traffic.

269 RWHP at 7407 rpm
torque of 183 at 7407 rpm
0-60 = 4.06 sec
1/8mi = 7.88sec
1/8mi = 83 mph
1/4mi = 12.67 sec
1/4mi = 103

How accurate these results are is really of no concern. I'll be looking for change post header install. I know they are somewhat off buy the 0-60 time results being faster than what the car should be capable of. I'm sure this is due to not entering the correct gear ratios in the software.

Did not do the planned timed runs at various mph's due to not having someone available to work the stopwatch and record the results.

Also after jacking the car up I see evidence of both a valve cover leak on the drivers side and the dreaded RMS leak. Neither bad enough to warrant concern yet. Guess I'll be getting that LFW sooner than I thought!

 

Very interesting...thanks for posting! Why do you think this software showed your peak torque @ 183ft-lbs to come in so high ?? (7400rpm) Seems to me it was just the torque at THAT specific rpm and doesn't have a peak torque display option, would i be correct?

---Kevin

** Can't wait to see your AFTER results! ..be sure to include the differences in the conditions of each run to (i.e. air temp, humidity, pressure if possible)

 

I'd say you are correct about the torque reading. I removed "max" from the post above.

car has cooled enough to not melt all my skin off. ...going turn some wrenches!

 

Completed one side. Ran out of light. The header change itself is very easy. I'd say, not including jack time, 20 minutes per side. The Suncoast headers are slightly heavier than stock. Enough to feel by hand but not enough to register on bathroom scales. This is to be expected. There's more "tubing" with headers and the flanges are slightly thicker. Fit on the drivers side was perfect.

The spark plugs are a major PIA!! If I would have had a hex driver socket they may have been easier. I can't even imagine changing them w/o dropping the headers. Condition of the old plugs were as expected for having nearly 64k miles. Showed wear but had the nice tan color of a healthy motor.

It'll most likey be Wednesday b4 I have a chance to work on the passenger side. ...Unless I .... cough, cough... have to stay home one day.

 

wow nice numbers mikyl. you've got TT stats .

road and track #'s for a 2001 TT:
0-60=4s
1/4mi=12.4s @ 115.6mph

ya, don't know about the HP figures (should be much higher) but the timed runs should be accurate barring human error .

 

Karlooz-- those numbers were per the software. No doubt the "timed runs" aren't "right". I'm just looking to see what the improvement is post header install. btw- what were the 01C2 stats?

You think the HP figures were low? I though those might be a pretty decent representation of actual RWHP.

 

i'm gonna have to eat crow beause i was touting this software as being more accurate than someone with a stopwatch.

if the timed runs you did are inaccurate then the timed difference you may record after installing the headers will also be inaccurate.

i would call autoenginuity and see if there is anything wrong with the "setup".

the HP estimate (269RWHP~316HP) can be close but they don't correlate with the performance numbers. a TT with at least 100HP more has the same preformance numbers. something doesn't jibe.

 

 

The software asks for all kinds of info. gear ratios being one. It does not have a setting already defined for my car. I'll need to find all that info. I used the one Porsche setting it had, "Porsche GT". With the correct ratios and other settings the software will likely be much more accurate.

 

hmmm.... that is probably the problem. the software thinks you have already reached 60 or 1/4 etc., and logs the time but is incorrect because of the gear ratios.

try it with this

 

Awesome!! Thanks for doing my homework. I know DDog was needing the ratios also.

 

MIYKL: you had any problems plugging in and connecting? i'm still finding i have to wiggle it around some to make it connect and then it's still not very reliable. your HP sounds a little high for a 3.4 liter. i'm sure that speedtracer software will be a lot more accurate once everything is inputed properly. you should leave it be for now though for your before and after testing. doesn't really matter what numbers you get for now, just the difference between the two runs.

 

I won't make any changes to the software until I get my after numbers so we can see a difference. I don't think changing the ratios in the software will change the HP numbers any though. I got the same HP numbers no matter what gear I made the run in. I tried 1st, 2nd, & 3rd. The ratios will affect the timed run data though.

I haven't had a problem with initiating or losing the connection except for once I accidently knocked the connecter out and had to reboot my laptop in order to reestablish the connection. it would not connect until I rebooted.

Thanks for setting up the GB. Just reading and clearing my CEL's made it worth every pennie!

 

THe only reason I say your HP reading might be a little high, is that your numbers translate into about 317 crank HP. That's about the same as a 3.6 liter and you're running a 3.4. Maybe the software has a plus/minus error of around 20. Either way it's pretty close. My stock 3.6 dyno'd at about 273 to the wheels on a dynojoet.

Do you have any other mods (ECU, etc)?

I'm still having issues with my connector. I tried someone else's obd scanner and it worked fine. I still have to wiggle mine around to make it connect.

When you get all the correct inputs for the speedtracer software, can you post them up? There's around 20 of us that bought the software so I'm sure people are going to start looking for this info.

 

We need the inputs for the TT also........my connector does the same thing, it fits well in the other vehicles but has to be wiggled around and doesn't seem to fit well in the Porsche.