Chip tuning

professor · 07-17-2008, 07:44 PM

geez louise! odd how much information has been posted after the initial suggestion to keep mum on this....

takahashi · 07-17-2008, 07:49 PM

After thought of the conversation about the dyno figure (said nothing still :wink

. The absence of LSD in your car makes the only difference is dynoing in different gear. Traditionally dyno at 1.000 ratio gives the best results, hence 4th gear?

WAY · 07-17-2008, 07:50 PM

So Taka, you are saying that 4th gear is more accurate than 6th gear on the dyno?

takahashi · 07-17-2008, 08:02 PM

Dynoing at 1.000 should theoratically gives the least drivetrain loss.

IMHO, I will take the highest figure :wink:

WAY · 07-17-2008, 08:16 PM

Quote:

Originally Posted by professor

geez louise! odd how much information has been posted after the initial suggestion to keep mum on this....

I am sharing my positive testing experience for the sake of the forum public!

Guran · 07-17-2008, 09:08 PM

Nice one guys! It's a shame you didn't get an acceleration run done before the mods went in. Hopefully you can find a Melbournian volunteer to contribute that half of the equation.

Guran · 07-17-2008, 09:22 PM

Quote:

Originally Posted by WAY

Yeah Nick at Peak has good reputation. Guran, Avril was down here on a track day last week and she mentioned you. This thread reminds me of that as I know Nick looks after her car too.

Jeez, Avril gets around! I heard she had a lot of fun down your way. Hope she didn't break anything on her car (again). Poor Megan (Avril's MINI) is in a bit of a state at the moment after an encounter with a tyre barrier.

takahashi · 07-17-2008, 09:26 PM

Quote:

Originally Posted by Guran

Nice one guys! It's a shame you didn't get an acceleration run done before the mods went in. Hopefully you can find a Melbournian volunteer to contribute that half of the equation.

Wolly is not very far when you need to break in your car :wink:

I am in the inner eastern suburb. PM me. To be fair, we need a 80kg mediocre driver in the driving seat

WAY · 07-17-2008, 09:35 PM

Haha funny Taka. 85kg btw, so you were wrong anyway.

I just got confirmation on the speedo speed using GPS in my car. I set the cruise control at 100kmh (it's digital so you can get exactly 100kmh) then let it run on a flat freeway for a few kilometres. With the current tyre pressure, 100kmh on the speedo = 98kmh in reality. So there you have it, 0-98kmh in 4.95sec, with two fat guys and lousy grip! Not bad if you ask me.

takahashi · 07-17-2008, 09:39 PM

4.95 sec!

Zuzu · 07-17-2008, 09:50 PM

I am 78kg ringing wet...Fly me down for the run...:biggrin:

smarm · 07-17-2008, 10:19 PM

What we need is a jockey driving Waynes mule.....

Zuzu · 07-17-2008, 10:21 PM

I will tell you out straight..

I AM NOT RIDING WAYNE......

takahashi · 07-17-2008, 11:18 PM

We don't need a good driver (there is one already). We need a stock car, preferably white :wub: want everything to be absolutely equal.

Riss Racing · 07-18-2008, 01:17 AM

Quote:

Originally Posted by WAY

So Taka, you are saying that 4th gear is more accurate than 6th gear on the dyno?

our dynos are all done in 4th gear. The problem with a dyno is it just show HP and TQ. People look at the max number and base their opinion on that. Cars that dyno a lot less than others. See better track times having a more fluid powerband. It all comes down to how your bolt ons/tune works together. Its not all about max hp/tq to have the fastest car.

takahashi · 07-18-2008, 02:37 AM

Totally understood and agree. You can be way out even dyno on the same machine in different days. There are so many variables.

andrew@southernBM · 07-18-2008, 10:40 PM

Quote:

Originally Posted by anthony@rissracing

our dynos are all done in 4th gear. The problem with a dyno is it just show HP and TQ. People look at the max number and base their opinion on that. Cars that dyno a lot less than others. See better track times having a more fluid powerband. It all comes down to how your bolt ons/tune works together. Its not all about max hp/tq to have the fastest car.

Hey Anthony,

i did a 4th gear run as well as a 6th gear run. The comparison is the dyno thread on shows difference in stock to dp's in 6th gear. Now i have 4th gear dyno run with DP's and current mod on same day and same dyno and the results are :headbang:

No-one has seen that chart yet, not even the owner.:thumbup:

xa-coupe · 07-18-2008, 11:40 PM

My understanding of dynos is you get the most accurate and relevant reading at the 1:1 gearing, usually 4th in manuals and 3rd in autos ( well, scummy aus 3 and 4 speed autos ! ).
Where torque and power is delievered is more relevant than outright HP/Kw. As an example, the xa ran 180RwKw and thrashed ( 13.3 Vs 14.1 1/4 miles ) a similar falcon that made 243RwKw as mine was all before 4500 rpm and his was over 6000 and was quite torqueless compared to the xa. Both were stock stroke 351s.
My reading was way lower but the rate at which it rose in the lower RPMs was way steeper.

Yep 135 · 07-18-2008, 11:40 PM

Quote:

Originally Posted by andrew@southernBM

Hey Anthony,

i did a 4th gear run as well as a 6th gear run. The comparison is the dyno thread on shows difference in stock to dp's in 6th gear. Now i have 4th gear dyno run with DP's and current mod on same day and same dyno and the results are :headbang:

No-one has seen that chart yet, not even the owner.:thumbup:

are you going to give us a hint????:biggrin:
do the numbers change much?:wink::wink:

WAY · 07-19-2008, 04:08 AM

How does one convert the rolling torque thing that you get from dyno reading to nm?

Yep 135 · 07-19-2008, 04:50 AM

Hi
Way,is the fuel pump keeping up with said mods or does it have a prostate :biggrin

flow) problem if you are going for it of a long duration? Just heard it could be a limiting factor and might need an upgrade as mods continue.

WAY · 07-19-2008, 05:19 AM

I am yet to find out as I haven't had it on full throttle for long (that requires the track). But from what I read of the guys who are racing theirs, it doesn't appear to be an issue.

07-17-2008, 07:44 PM	#45
professor Major 46 Rep 1,473 Posts Drives: Z4 M40i Join Date: Mar 2008 iTrader: (0)	geez louise! odd how much information has been posted after the initial suggestion to keep mum on this....
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07-17-2008, 07:49 PM	#46
takahashi Retired trackie 36 Rep 1,527 Posts Drives: 1///M Join Date: Jul 2008 Location: Melbourne, Australia iTrader: (0)	After thought of the conversation about the dyno figure (said nothing still :wink. The absence of LSD in your car makes the only difference is dynoing in different gear. Traditionally dyno at 1.000 ratio gives the best results, hence 4th gear? __________________ TAKA 一仔BLOGブログ: BMW 1 series M 2011! Delivered 18/11/11.
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07-17-2008, 07:50 PM	#47
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	So Taka, you are saying that 4th gear is more accurate than 6th gear on the dyno?
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07-17-2008, 08:02 PM	#48
takahashi Retired trackie 36 Rep 1,527 Posts Drives: 1///M Join Date: Jul 2008 Location: Melbourne, Australia iTrader: (0)	Dynoing at 1.000 should theoratically gives the least drivetrain loss. IMHO, I will take the highest figure :wink: __________________ TAKA 一仔BLOGブログ: BMW 1 series M 2011! Delivered 18/11/11.
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07-17-2008, 09:08 PM	#50
Guran Captain 24 Rep 895 Posts Drives: 08 135i Coupe Join Date: May 2008 Location: Wollongong, Australia iTrader: (0)	Nice one guys! It's a shame you didn't get an acceleration run done before the mods went in. Hopefully you can find a Melbournian volunteer to contribute that half of the equation. __________________ 08 BMW 135i Sport Coupe \| Manual \| Sparkling Graphite \| Coral Red Boston Leather \| 10 Speaker Hi Fi
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07-17-2008, 09:35 PM	#53
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	Haha funny Taka. 85kg btw, so you were wrong anyway. I just got confirmation on the speedo speed using GPS in my car. I set the cruise control at 100kmh (it's digital so you can get exactly 100kmh) then let it run on a flat freeway for a few kilometres. With the current tyre pressure, 100kmh on the speedo = 98kmh in reality. So there you have it, 0-98kmh in 4.95sec, with two fat guys and lousy grip! Not bad if you ask me.
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07-17-2008, 09:39 PM	#54
takahashi Retired trackie 36 Rep 1,527 Posts Drives: 1///M Join Date: Jul 2008 Location: Melbourne, Australia iTrader: (0)	4.95 sec! __________________ TAKA 一仔BLOGブログ: BMW 1 series M 2011! Delivered 18/11/11.
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07-17-2008, 09:50 PM	#55
Zuzu Major General 2816 Rep 7,637 Posts Drives: M2C HS 6MT Join Date: Mar 2008 Location: Sydney Australia iTrader: (0)	I am 78kg ringing wet...Fly me down for the run...:biggrin:
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07-17-2008, 10:21 PM	#57
Zuzu Major General 2816 Rep 7,637 Posts Drives: M2C HS 6MT Join Date: Mar 2008 Location: Sydney Australia iTrader: (0)	I will tell you out straight.. I AM NOT RIDING WAYNE......
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07-17-2008, 11:18 PM	#58
takahashi Retired trackie 36 Rep 1,527 Posts Drives: 1///M Join Date: Jul 2008 Location: Melbourne, Australia iTrader: (0)	We don't need a good driver (there is one already). We need a stock car, preferably white :wub: want everything to be absolutely equal. __________________ TAKA 一仔BLOGブログ: BMW 1 series M 2011! Delivered 18/11/11.
	Appreciate 0 Quote

07-18-2008, 02:37 AM	#60
takahashi Retired trackie 36 Rep 1,527 Posts Drives: 1///M Join Date: Jul 2008 Location: Melbourne, Australia iTrader: (0)	Totally understood and agree. You can be way out even dyno on the same machine in different days. There are so many variables. __________________ TAKA 一仔BLOGブログ: BMW 1 series M 2011! Delivered 18/11/11.
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07-18-2008, 11:40 PM	#62
xa-coupe Wannabe 6 Rep 268 Posts Drives: Join Date: Jun 2008 iTrader: (0)	My understanding of dynos is you get the most accurate and relevant reading at the 1:1 gearing, usually 4th in manuals and 3rd in autos ( well, scummy aus 3 and 4 speed autos ! ). Where torque and power is delievered is more relevant than outright HP/Kw. As an example, the xa ran 180RwKw and thrashed ( 13.3 Vs 14.1 1/4 miles ) a similar falcon that made 243RwKw as mine was all before 4500 rpm and his was over 6000 and was quite torqueless compared to the xa. Both were stock stroke 351s. My reading was way lower but the rate at which it rose in the lower RPMs was way steeper.
	Appreciate 0 Quote

07-19-2008, 04:08 AM	#64
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	How does one convert the rolling torque thing that you get from dyno reading to nm?
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07-19-2008, 04:50 AM	#65
Yep 135 Lieutenant 11 Rep 591 Posts Drives: BMW 135 manual Join Date: Oct 2008 Location: Canberra iTrader: (0)	Hi Way,is the fuel pump keeping up with said mods or does it have a prostate :biggrinflow) problem if you are going for it of a long duration? Just heard it could be a limiting factor and might need an upgrade as mods continue.
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07-19-2008, 05:19 AM	#66
WAY Brigadier General 458 Rep 4,822 Posts Drives: Fast ones Join Date: Jul 2007 Location: Melbourne, Australia iTrader: (0)	I am yet to find out as I haven't had it on full throttle for long (that requires the track). But from what I read of the guys who are racing theirs, it doesn't appear to be an issue.
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