Diy- How To Dyno The Rx8
12-31-2008, 06:48 PM
#76
Power!!
All about finding out where something is in reality relative to "zero."
12-31-2008, 09:57 PM
#78
Asshole for hire
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back OT:
I've read bit and pieces of this thread and other dicussions about it dozens of times over the last couple of years. STILL the more i read, the more go in circles. In my mind i know i should be able to hop on a dyno, fully disable TCS/DSC and go at it. But at the same time i cant seem to accept it blindly like that. Maybe it's a lack of full understanding of what the PCM does in regards to torque sensors, traction, and wheel speed... is there a chance that anyone can really fully break it down? Any sections of any manuals that cover the flow/logic diagram or whatever the PCM uses? I have most of them afaik but i havent seen anything obviously related in my quick skimming...
Jeff, sorry - i don't intend to be asking you to step up and educate, but honestly i dont know who might know the in's and out's of the way the damn thing works as well as you
01-01-2009, 03:56 PM
#79
Power!!
wow, what an analogy. that explains a lot of the storyline with the AP tuning, which btw i'm glad you got things streamlined. see people, even MM learns as he goes sometimes. he isn't an evil artificial alien lifeform..... or is he
back OT:
I've read bit and pieces of this thread and other dicussions about it dozens of times over the last couple of years. STILL the more i read, the more go in circles. In my mind i know i should be able to hop on a dyno, fully disable TCS/DSC and go at it. But at the same time i cant seem to accept it blindly like that. Maybe it's a lack of full understanding of what the PCM does in regards to torque sensors, traction, and wheel speed... is there a chance that anyone can really fully break it down? Any sections of any manuals that cover the flow/logic diagram or whatever the PCM uses? I have most of them afaik but i havent seen anything obviously related in my quick skimming...
Jeff, sorry - i don't intend to be asking you to step up and educate, but honestly i dont know who might know the in's and out's of the way the damn thing works as well as you
back OT:
I've read bit and pieces of this thread and other dicussions about it dozens of times over the last couple of years. STILL the more i read, the more go in circles. In my mind i know i should be able to hop on a dyno, fully disable TCS/DSC and go at it. But at the same time i cant seem to accept it blindly like that. Maybe it's a lack of full understanding of what the PCM does in regards to torque sensors, traction, and wheel speed... is there a chance that anyone can really fully break it down? Any sections of any manuals that cover the flow/logic diagram or whatever the PCM uses? I have most of them afaik but i havent seen anything obviously related in my quick skimming...
Jeff, sorry - i don't intend to be asking you to step up and educate, but honestly i dont know who might know the in's and out's of the way the damn thing works as well as you
No timing pulled and no weirdness from the PCM. Just do it.
Go ahead and dyno it.
01-29-2009, 06:33 PM
#81
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Upon dynoing my car - we received consistent hp numbers of less than 1 hp difference and all we did was hold down d.s.c. for the few seconds
as a matter of fact i had mentioned this thread to my tuner and he was curious, as was i, to find out if it is true, we looked through the rx8 dealer manual and find no tie to the abs cutting engine power - and as previously stated, numbers were consistent and no 'power loss' was evident.
_
my $.02
as a matter of fact i had mentioned this thread to my tuner and he was curious, as was i, to find out if it is true, we looked through the rx8 dealer manual and find no tie to the abs cutting engine power - and as previously stated, numbers were consistent and no 'power loss' was evident.
_
my $.02
07-19-2009, 12:48 AM
#85
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well I have an 04 RX8 and have no DSC button and when I dynoed my 8 it was pathetic and on top of it all it was at a honda shop. My fuel was WAY rich my numbers didnt break 135hp and every light imaginable light up my dashboard like a christmas tree then once I pulled it off the dyno and drove it those lights went off. Then proceded to race and beat a car that dynoed before I did that showed 173hp on the same dyno. And I didnt pull the fuse either. So I will go back to this same shop pull the fuse and see what I get.
09-03-2009, 05:26 PM
#86
All of you, shut up !!!!!
Im gonna go dyno my car after this week, suppose to do it last week but **** *** Clutch Bracket broke in the *Right* time, took them 3 days to fix it, got my car back on friday, too late.
and this coming week I have finals and **** work bugging me like crazy.
Gonna do it the xmas week I guess. I will try the *DSC button* method first. 1 hour unlimited pulls for 120 bux (aye...), weather is gonna be cold.
After that I will do another pull after the new year using the *Pull fuse* method. Alright ?
Im gonna go dyno my car after this week, suppose to do it last week but **** *** Clutch Bracket broke in the *Right* time, took them 3 days to fix it, got my car back on friday, too late.
and this coming week I have finals and **** work bugging me like crazy.
Gonna do it the xmas week I guess. I will try the *DSC button* method first. 1 hour unlimited pulls for 120 bux (aye...), weather is gonna be cold.
After that I will do another pull after the new year using the *Pull fuse* method. Alright ?
02-26-2010, 01:02 PM
#92
We aren't . It's just that Team keeps posting in here .
But he does have a point ,the thread should be de-stickyed (if that is a word)
Something I have found with dynoing mine that might be useful :
Be carefull that there is sufficient airflow to the radiator . The guy that does mine insists on directing the fan into the intercooler and i have seen engine temps go awhol as a result .
But he does have a point ,the thread should be de-stickyed (if that is a word)
Something I have found with dynoing mine that might be useful :
Be carefull that there is sufficient airflow to the radiator . The guy that does mine insists on directing the fan into the intercooler and i have seen engine temps go awhol as a result .
02-27-2010, 03:08 PM
#97
I guess it depends on the fans.
The carpet fans (usually just two pointed in the "mouth" at the IC and rad) they use at UMS here in Tempe actually over-cool the car if I'm not careful.
Its not unusual to see my coolant temps drop below the 175°F threshold between runs if I don't run them close enough together.
Oil temps simply wont go over 185°F or so no matter what.
The carpet fans (usually just two pointed in the "mouth" at the IC and rad) they use at UMS here in Tempe actually over-cool the car if I'm not careful.
Its not unusual to see my coolant temps drop below the 175°F threshold between runs if I don't run them close enough together.
Oil temps simply wont go over 185°F or so no matter what.
06-27-2010, 09:27 AM
#99
Yes I am going here, but no; I am not discussing "it".
Two and a half years and no one has managed to do just this? What ever happened to the Scientific Method? Leave the philosophical arguments out of this and just prove whether or not there is a difference between the two with results.
Unless someone has actually done this (and pending $150 I can rationalize throwing away), I will step up to the task sometime this year. My car is -- with respect to the "major horsepower upgrades" section -- very much unmodified; so I hope this isn't a worthless gesture for the sake of those using aftermarket systems. I have a Hymee sCANalyzer; would any data logging be useful for such a comparative test, or would the dyno sheet prove to be the only interesting bits of data?
I really want to see 2 different dyno sessions with each method now. I want to see one dynoed with the button pressed and held. Dyno 3 times back to back to back. Then go back in a week and repeat. Compare numbers. Do the same thing with the pull the fuse method. Use the same car. Compare results between both for consistency. The total power number isn't important. Consistency is. That's what I want to see. If one method consistently produces a higher power number on an n/a car it would actually be the more accurate one to use anyways.
Someone try this and post the results.
Someone try this and post the results.
Unless someone has actually done this (and pending $150 I can rationalize throwing away), I will step up to the task sometime this year. My car is -- with respect to the "major horsepower upgrades" section -- very much unmodified; so I hope this isn't a worthless gesture for the sake of those using aftermarket systems. I have a Hymee sCANalyzer; would any data logging be useful for such a comparative test, or would the dyno sheet prove to be the only interesting bits of data?
