kaks_EK9Rx
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How much BHP is 159WHP? 
Stock EK9 Hondata Tuned 162.7whp - 190bhp
- Thread starter EK9turbo
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kaks_EK9Rx
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When i get my 9 in Jan, im gonna come to you for abit of advice ).gif ":)) :))")
tecque
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NICE power...About 190bhp
Bro..how u convert it to BHP? Actually wat BHP means? BRake horse power...
bhp comes from the name De-Prony-Brake, which was the first engine power measurement at the crankshaft
Generally FWD setups like ours where the gearbox is connected to the engine lose between 10-20 power. Every gearbox is different tough, some dynos have built in formulas, you tell it what setup it is (FWD, RWD, 4WD etc) and it estimates power at the engine. The more power you make, the less % you lose to the gearbox. Either way it is best to look at the useable power at the wheels before and after modifications to prove the parts worth.
Generally FWD setups like ours where the gearbox is connected to the engine lose between 10-20 power. Every gearbox is different tough, some dynos have built in formulas, you tell it what setup it is (FWD, RWD, 4WD etc) and it estimates power at the engine. The more power you make, the less % you lose to the gearbox. Either way it is best to look at the useable power at the wheels before and after modifications to prove the parts worth.
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blinx9900
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Generally FWD setups like ours where the gearbox is connected to the engine lose between 20-25% power. Every gearbox is different tough, some dynos have built in formulas, you tell it what setup it is (FWD, RWD, 4WD etc) and it estimates power at the engine. The more power you make, the less % you lose to the gearbox. It is proportional. Either way it is best to look at the useable power at the wheels before and after modifications to prove the parts worth.
i don't mean to argue but honda's are known to have some of the lowest drivetrain losses and on our fwd cars its actually spot on at about 15% which is much more in line with the whp and bhp numbers you are giving.
from your graphs it looks like that car will drive allot quicker on the road / track you have gained allot of all important area under the graph
well observed thanks!
..With a bit more time on the dyno it could still make more peak hp. If you look at the graph near redline, although its still more powerr there its falling off earlier than stock. another 1/2hr on the dyno and this can be fixed. I'll do this before I do a de-cat comparison next weekend. 
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What sorta ignition values are you using?
Its gonna be better mapping the car to 98 ron as the stock map is probably too agressive as its ignition timing is for for 100 ron,
the ecu must be ripping timing out the map from knock sensor input values with the stock map, and it takes time for the ecu to ramp the timing back up again,
a proper map for 98 ron must make the car feel allot more responsive even though you are probably reducing the ignition advance in places from the stock map,
the car should run much better properly mapped for the fuel it is running on just as your graphs show,
Hondata s300 is my icing on teh cake modification for the future,
Its gonna be better mapping the car to 98 ron as the stock map is probably too agressive as its ignition timing is for for 100 ron,
the ecu must be ripping timing out the map from knock sensor input values with the stock map, and it takes time for the ecu to ramp the timing back up again,
a proper map for 98 ron must make the car feel allot more responsive even though you are probably reducing the ignition advance in places from the stock map,
the car should run much better properly mapped for the fuel it is running on just as your graphs show,
Hondata s300 is my icing on teh cake modification for the future,
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There wasn’t any knock when running when it was dyno'd on the stock-ecu. ..we'll have to see what Tim thinks about its responsiveness when he's next online. As for ignition values, sorry but I'm not disclosing any information on this.
Hi
The car feels great. I think it's a combination of the lowered VTEC point and the mid-range smoothness, it's definitely more responsive, you can feel it pulling harder. I don't know what else to say but feel free to ask questions. I know Will has driven it a couple of times and he'd be able to give a better review than I can, unfortunately he probably can't remember how a stock EK9 feels!
There's a slight hesitation from going into 3rd from 2nd just before the shift light comes on (8000rpm?), might be something to do with it 'dropping off' at the end as per graph, or it could simply be me driving like a gay. Who knows? what I do know, is that if its something Will can fix, he'll fix it. If anyone else needs any assistance re: Hondata or anything Honda related I wouldn't hesitate to contact him, this guy knows his stuff - he makes a belting cuppa too
I can't wait to get the de-cat on. Something I miss is the noise! The car hasn't always been in stock form as a few ek9.org readers may be aware of. I sooo miss my RS*R cat-back
I've bought 3L of Landrover MTF94 btw Will, I can't be doing with this MTF3
The car feels great. I think it's a combination of the lowered VTEC point and the mid-range smoothness, it's definitely more responsive, you can feel it pulling harder. I don't know what else to say but feel free to ask questions. I know Will has driven it a couple of times and he'd be able to give a better review than I can, unfortunately he probably can't remember how a stock EK9 feels!
There's a slight hesitation from going into 3rd from 2nd just before the shift light comes on (8000rpm?), might be something to do with it 'dropping off' at the end as per graph, or it could simply be me driving like a gay. Who knows? what I do know, is that if its something Will can fix, he'll fix it. If anyone else needs any assistance re: Hondata or anything Honda related I wouldn't hesitate to contact him, this guy knows his stuff - he makes a belting cuppa too
I can't wait to get the de-cat on. Something I miss is the noise! The car hasn't always been in stock form as a few ek9.org readers may be aware of. I sooo miss my RS*R cat-back
I've bought 3L of Landrover MTF94 btw Will, I can't be doing with this MTF3
Hi EK9'ers 
Well heres what we did today...
the aims of some of the tests was to see if just simply fitting a cat would gain or lose power.
WE...
*fine-tuned the map with cat, corrected the power dropping-off and made it simply PERFECT across the board.
*tested the car with the hondata map without ANY tuning changes except replacing the cat for this £30 decat Tim picked up. (which seemed a bit too small a bore size to be ideal IMO)
see pics...
*I then tuned it with the De-cat fitted to see the peak gain.
*then re-tested my own car for giggles.
Here is the final map with the cat on. This is that map that ill supply to EK9 owners who buy Hondata from me. For a stock EK9 this map is PERFECT...its had 5+ hours spent on the dyno making light throttle through to full throttle
super-fine tuned 
Notice the smoothness low down and at the top of the graph. Before (i.e. last week) the graph dropped off sooner than the stock graph as it needed more dyno-time to perfect.
Once I finished tuing the car completely stock, me & Tim changed the cat for the above de-cat pipe then proceeded to do a quick power run with the map unchanged...
straight away fitting the decat cause the IDLE AFR (air/fuel ratio) to lean out one whole AFR, wheres before it idled perfectly at 14.7:1, now it was idling as below...
Heres the graphe striaght after... Basically it was leaner across the whole rpm range although making a touch more hp low rpm range and yet lost 1 to 1.5+hp at the top.
Notice how lean the mixure has gone. At full throttle the mixture should be around 13.5:1, the dotted red line is 13:1 reference.(
Heres the graph of final cat vs. decat
Heres the final decat map vs. stock PCT
Untuned decat Vs. tuned Decat
Well heres what we did today...the aims of some of the tests was to see if just simply fitting a cat would gain or lose power.
WE...
*fine-tuned the map with cat, corrected the power dropping-off and made it simply PERFECT across the board.
*tested the car with the hondata map without ANY tuning changes except replacing the cat for this £30 decat Tim picked up. (which seemed a bit too small a bore size to be ideal IMO)
see pics...
*I then tuned it with the De-cat fitted to see the peak gain.
*then re-tested my own car for giggles.
Here is the final map with the cat on. This is that map that ill supply to EK9 owners who buy Hondata from me. For a stock EK9 this map is PERFECT...its had 5+ hours spent on the dyno making light throttle through to full throttle
super-fine tuned Notice the smoothness low down and at the top of the graph. Before (i.e. last week) the graph dropped off sooner than the stock graph as it needed more dyno-time to perfect.
Once I finished tuing the car completely stock, me & Tim changed the cat for the above de-cat pipe then proceeded to do a quick power run with the map unchanged...
straight away fitting the decat cause the IDLE AFR (air/fuel ratio) to lean out one whole AFR, wheres before it idled perfectly at 14.7:1, now it was idling as below...
Heres the graphe striaght after... Basically it was leaner across the whole rpm range although making a touch more hp low rpm range and yet lost 1 to 1.5+hp at the top.
Notice how lean the mixure has gone. At full throttle the mixture should be around 13.5:1, the dotted red line is 13:1 reference.
(Heres the graph of final cat vs. decat
Heres the final decat map vs. stock PCT
Untuned decat Vs. tuned Decat
Heres a pic of Tims car on the dyno, this pic is from last week though...
Heres some of the other cars I'll be tuning once I get the suitable software from the ecu manufacturers...
Heres a couple of TVR Tuscans...
A Cerb' I had on the dyno last week...
This is form when I got there in the morning, cars being moved out of the workspace.
Just for giggles I put my car on the dyno, run mine at 12psi then 15psi, I need to tweak my map at that particular boost level. It was smoother at 16psi on the dynapacks last time I tested it. Kind of puts it into perspective next to the stock ek9 lol.
Ill put a vid up of Tims car and my car at some point. Ive advised him to have the cat back on and use the other map since theres only a slight gain (since the rest of the car is stock) and the map for the stock car is pure perfection!
Ill put the cat back on his car tomorrow and Tim can share his thoughts on this final map.
Heres some of the other cars I'll be tuning once I get the suitable software from the ecu manufacturers...
Heres a couple of TVR Tuscans...
A Cerb' I had on the dyno last week...
This is form when I got there in the morning, cars being moved out of the workspace.
Just for giggles I put my car on the dyno, run mine at 12psi then 15psi, I need to tweak my map at that particular boost level. It was smoother at 16psi on the dynapacks last time I tested it. Kind of puts it into perspective next to the stock ek9 lol.
Ill put a vid up of Tims car and my car at some point. Ive advised him to have the cat back on and use the other map since theres only a slight gain (since the rest of the car is stock) and the map for the stock car is pure perfection!
Ill put the cat back on his car tomorrow and Tim can share his thoughts on this final map.
