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bigbigbarra Amateur Lvl 2


Joined: 27 Oct 2008 Posts: 186
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Posted: Mon Jul 13, 2009 4:10 pm Post subject: |
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| ed wrote: | | the honda ecu's closed loop system has been known to be able to "erode" the piggyback gain after several mths. |
hi ed,
really? did your ecu over-ride your piggyback over time?
| ed wrote: | | secondly, i noted the torque chart a little weird lo. ideally shld hv a flat-top curve shape with the max torque held on a plateau so dat u can hold the max torque over a rpm range. |
are you sure? have another look... |
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squall LvL 2


Joined: 11 Oct 2006 Posts: 55
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Posted: Tue Jul 14, 2009 5:40 pm Post subject: |
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Hi Bro Ed,
Ya will perform another run in a while to see whether the piggyback gain will be loss...
As for the torque gain... it has a slight deep after 3000rpm and it go up again at 5000pm all the way to the max.. if we look at the bigger pic from from 3000pm onwards... meaning the chart that starts from 0 - 190 the torque stays at the region of 175 - 187.. which is consider quite at the top end right? |
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blue Veteran Lvl 2


Joined: 26 Feb 2007 Posts: 853 Location: Klang
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Posted: Tue Jul 14, 2009 6:03 pm Post subject: |
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The torque curve looks wierd because the dip looks very big, but in reality the scale of the dip is very small.
Original output at 4000 rpm is about 97 bhp, but the new output at 4000 rpm (where it dips the most is) 175bhp. That's a huge hike for that region of the rpm needle.
I wonder how this car feels to drive... macam rocket? I'm sure you cannot pass this car to anyone else to drive ... better not.  |
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ed Club Advisor


Joined: 15 Jun 2006 Posts: 3281
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Posted: Tue Jul 14, 2009 7:55 pm Post subject: |
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just sharing fr experience ...
the stock honda ecu has been known to be able to override the piggyback loop overtime ... in particular for unichip.
so going for a dyno run after 3-6mths is just to give u addn assurance & comfort everything still swee2x after tuning ... cos to retune aint cheap la. unless your tuner has found a way to override the closed loop system of the stock ecu.
do be aware the whp curve and torque curve should not show similar paths .... the whp curve normally goes towards a peak output just before the rpm cut and not at the rpm cut. and becareful not to misread the max whp reading when there is a "power spike".
the torque curve should move towards a max and plateaus (flat curve top) at the max for a rpm range then starts to reduce. it shouldnt resemble closely to a whp curve.
thirdly, be aware of anomalies on the curve such as uneven surges or downward dip sections on the curve cos it could be wrong ignition timing or wrong camshaft timing or vtc angle wrong ... so many possibilities. make the tuner correct it cos its ur right .
so look for these exceptions and start asking the tuner. ask him wat is the rpm cut he has set and see if the whp curve reads it lo ....
my 2cents la.
| squall wrote: | Hi Bro Ed,
Ya will perform another run in a while to see whether the piggyback gain will be loss...
As for the torque gain... it has a slight deep after 3000rpm and it go up again at 5000pm all the way to the max.. if we look at the bigger pic from from 3000pm onwards... meaning the chart that starts from 0 - 190 the torque stays at the region of 175 - 187.. which is consider quite at the top end right? |
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squall LvL 2


Joined: 11 Oct 2006 Posts: 55
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Posted: Thu Jul 16, 2009 3:19 pm Post subject: |
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Hi Bro Blue,
I tot the stock torque output is at 188nm at 4800rpm...so i think the hike not that much but do feel more responsive though.
Hi Bro Ed,
Thanks for the advise, I think I get what you mean... let me try to do a dyno run after 6 months.. then if there are any issues after that will tell the tuner what to do... Mean while just drive around and enjoy first lo.. |
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bigbigbarra Amateur Lvl 2


Joined: 27 Oct 2008 Posts: 186
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Posted: Thu Jul 16, 2009 5:09 pm Post subject: |
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| ed wrote: | do be aware the whp curve and torque curve should not show similar paths .... the whp curve normally goes towards a peak output just before the rpm cut and not at the rpm cut. and becareful not to misread the max whp reading when there is a "power spike".
the torque curve should move towards a max and plateaus (flat curve top) at the max for a rpm range then starts to reduce. it shouldnt resemble closely to a whp curve. |
dude,
look again: it's just that the y axis scale for squall's torque chart was set to increments of 1Nm. here is what it looks like if set to 20Nm. looks pretty flat/good to me.
Only registered users can see links on this forum! Register or Login on forum! |
| ed wrote: |
thirdly, be aware of anomalies on the curve such as uneven surges or downward dip sections on the curve cos it could be wrong ignition timing or wrong camshaft timing or vtc angle wrong ... so many possibilities. make the tuner correct it cos its ur right . |
fyi: most unichip tuners only adjust air-fuel ratios, ignition timing and vtec switching for a NA FD2.0. don't think such tuning affects pre-set camshaft timing or vtc angles.  |
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squall LvL 2


Joined: 11 Oct 2006 Posts: 55
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Posted: Sat Jul 18, 2009 3:33 pm Post subject: |
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Hi Bro BigBarra.
Thanks for the new copy of the bhp and torque graph you did for me.. nice.... will keep a copy for my own reference.
Anyway meet you with babyk yesterday ... do the TB and crank reset.. now the idling looks good... must thank him next time...
if i drop by penang next time we can meet up for yumcha... |
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bigbigbarra Amateur Lvl 2


Joined: 27 Oct 2008 Posts: 186
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Posted: Sat Jul 18, 2009 8:05 pm Post subject: |
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| squall wrote: | Hi Bro BigBarra.
Thanks for the new copy of the bhp and torque graph you did for me.. nice.... will keep a copy for my own reference. |
you're welcome.
| squall wrote: | | Anyway meet you with babyk yesterday ... do the TB and crank reset.. now the idling looks good... must thank him next time... |
if you like it, post a little TQ to him on his website forum = my-civic.com
| squall wrote: | | if i drop by penang next time we can meet up for yumcha... |
look fwd to that.  |
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netken Committee


Joined: 26 Nov 2007 Posts: 4098 Location: We Rise - You Fall.
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bigbigbarra Amateur Lvl 2


Joined: 27 Oct 2008 Posts: 186
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Posted: Mon Jul 20, 2009 11:42 am Post subject: |
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| netken wrote: | dun forget me too  |
as and when you're in pg, drop me a line.  |
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babyk Veteran Lvl 2


Joined: 15 Sep 2007 Posts: 747 Location: Cyberjaya/Penang/Singapore/Japan
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Posted: Wed Jul 22, 2009 11:19 am Post subject: |
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| squall wrote: | Hi Bro BigBarra.
Thanks for the new copy of the bhp and torque graph you did for me.. nice.... will keep a copy for my own reference.
Anyway meet you with babyk yesterday ... do the TB and crank reset.. now the idling looks good... must thank him next time...
if i drop by penang next time we can meet up for yumcha... |
hi squall
thanks for the meet up
hope you like those "things" we did
haha~ _________________ Denso IK20L @ RM160 with shipping
Only registered users can see links on this forum! Register or Login on forum! |
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squall LvL 2


Joined: 11 Oct 2006 Posts: 55
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Posted: Wed Jul 22, 2009 5:50 pm Post subject: |
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Hi Bro babyk,
I join the my-civic forum yet to get approval... want to post a line also cannot.. hahahaha.. please be fast and approve me ... |
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babyk Veteran Lvl 2


Joined: 15 Sep 2007 Posts: 747 Location: Cyberjaya/Penang/Singapore/Japan
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Posted: Wed Jul 22, 2009 11:03 pm Post subject: |
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| squall wrote: | Hi Bro babyk,
I join the my-civic forum yet to get approval... want to post a line also cannot.. hahahaha.. please be fast and approve me ... |
already approved lah...haha
see you there _________________ Denso IK20L @ RM160 with shipping
Only registered users can see links on this forum! Register or Login on forum! |
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fillet Newbie

Joined: 23 Aug 2009 Posts: 19
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Posted: Wed Sep 02, 2009 8:37 am Post subject: |
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bro..
after those mods, does your car sound very loud?
i wanna do some mod.. but i don't want loud exhaust noise(keep the noise level as low as stock setup).. is it possible? |
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squall LvL 2


Joined: 11 Oct 2006 Posts: 55
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Posted: Thu Sep 24, 2009 1:27 pm Post subject: |
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Hi Bro fillet,
There will be slight increase in the engine sound from all this mod. I am using CTR exhaust therefore the sounds is quite mild unless you are in high rev... |
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