rolling road


elv1

Member
Joined
Dec 23, 2007
Messages
205
hi guys just had ma ek9 on the rollers and am a little gutted to be honest came away with 180.5 with 128.5 at the wheels

the mods on the car are
KOYO Steel Radiator, FEEL's Induction Unit, FEEL's Four Branch Manifold, Kakimoto Stainless Steel Exhaust System, Nology Uprated Plug Leads,

thought it would have made more than this:angry2:
 
Do you know what kind of dyno it was? If not, just describe its size and how the car was hooked up.
 
i might be wrong but that looks like a mustang dyno and those can read VERY high in some instances.

remember a stock ek9 usually makes about 155whp on a dynojet. intake,header, and exhaust will not give you 25whp. if it did your damn lucky.
 
My VTi made 135.4 at the wheels.

Also, I have heard many stories about the rolling road at Eccose.

Some people have had many strange readings from there.

Also, hate to say it again, but your alloys will have made a huge difference in your power figures.
 
Also... if you want to get your car on a decent rolling road and speak to a guy who knows a few things, go here....

AndyForrestPerformance
Unit 21 Harbour Road
Port Seton
East Lothian
EH32 0DS
07720 888610
01875 811811
info@andyforrestperformance.co.uk

He does specialize in Subaru's but loves his cars and even came to to Plymouth a while back to show and teach one of our rolling road specialists how to use the Apexi datalogic.

Worth a shot.
 
One question, do you know what compression per cylinder your motor has? :nerv:
 
i would'nt trust those results mate if you get 180 bhp at the fly on an ek9 you should be getting around 135-138 bhp at the wheels
 
cheers for the feed back guys going to wait till the new year till a buy a few more bits for the car then will get it rolling roaded again
 
i would'nt trust those results mate if you get 180 bhp at the fly on an ek9 you should be getting around 135-138 bhp at the wheels
Comments like that only make things more confusing to some....please don't say these things guys, 185 bhp B16B is around 160-165 whp! Now, how come and your calculation showed 135-138 whp for 180 bhp?
Bhp at the wheels?? What's that??
 
seeing as rolling roads are a measure of power AT THE WHEELS then the power atw should be correct and it looks like he has got his power at fly estimate WAAAAAAY off!!
 
Comments like that only make things more confusing to some....please don't say these things guys, 185 bhp B16B is around 160-165 whp! Now, how come and your calculation showed 135-138 whp for 180 bhp?
Bhp at the wheels?? What's that??

Because this is what my friends ek9 got on a recent rolling road day on a brand new dyno dynamics machine ,and by the way manos its a forum people can express there opinions on feelings etc whats it got to do with you :bow:hero his was 180 at the flywheel and 144 whp making it a 36 bhp transmission loss
 
You normally get a engine power(power at the flywheel) and torque print out and power at the wheels (whp) on rolling roads in the uk and his figures were 180 bhp at the flywheel(engine power) and 144 bhp at the wheels(whp) i was a bit off with his whp

what is the ruff transmission loss for a ek9 ive been told a few different figures some say 40 bhp loss some say as high as 45bhp losses ??
 
Because this is what my friends ek9 got on a recent rolling road day on a brand new dyno dynamics machine ,and by the way manos its a forum people can express there opinions on feelings etc whats it got to do with you :bow:hero
Firstly, I have no reason not to believe you about the dyno figures.......
Secondly, dynamometers are not reliable for many reasons, even brand new, another example the false readings you just mentioned.....
Lastly, nobody has the right to prohibit you from expressing your thoughts etc, just say "I think" if it's an opinion...:D
 
Comments like that only make things more confusing to some....please don't say these things guys, 185 bhp B16B is around 160-165 whp! Now, how come and your calculation showed 135-138 whp for 180 bhp?
Bhp at the wheels?? What's that??

agreed, best to do a bit of :blinx: before you say some things vtec.

seeing as rolling roads are a measure of power AT THE WHEELS then the power atw should be correct and it looks like he has got his power at fly estimate WAAAAAAY off!!

agreed, some dyno's do read "estimated flywheel horsepower" also some dyno's are just crap too :angry:

Because this is what my friends ek9 got on a recent rolling road day on a brand new dyno dynamics machine
that explains it all, my car made 208hp on a dyno dynamics :lol: pure crap, i hate those dyno's unless the user knows exactly how to use it, its gonna be WAY off. i didnt even pay the guy, i just drove off. dynojet and AEM showed my car to actually have 317whp at that time.

and by the way manos its a forum people can express there opinions on feelings etc whats it got to do with you
you certainly can express your opinion, but your making it sound like a fact, and thats why manos is jumping on you, thats why whenever I say something if im not sure i always say "imo" "iirc" (imo= in my opinion and iirc= if i recall correctly)


what is the ruff transmission loss for a ek9 ive been told a few different

15% drivetrain loss is typical for a front wheel drive car which would put an ek9 right at 157.25whp honda gearbox's are a bit more efficient than others so the 160-165 manos suggest is possible, but mostly ive seen around 156whp.

You normally get a engine power(power at the flywheel) and torque print out and power at the wheels (whp) on rolling roads in the uk and his figures were 180 bhp at the flywheel(engine power) and 144 bhp at the wheels(whp) i was a bit off with his whp

thats like saying you have xxxwhp at the flywheel. it dosent make sense.
 
those wheels def takin a lot of power from your car.
I had 17's on and now have 15's on and she waaay faster :win:
 
My car was rolling roaded last w'end there and made 184bhp at the fly and 150bhp at the wheels! now to me that sounds perfect for a standard car?! oh and i am running 16" wheels if that helps use guys lol
 
rolling roads are ****. ok for setting a engine up but for true figs they are way off. only time i would be worried is if my car was alot slower than other ek9's. if u feel its better than stock with the mods u have and drives well on the road thats the main thing. there is to meany things that go against you when its on the rolling road. eg atmospheric air pressure,air temp in the room also you dont have cold air flowing throught the engine bay like you would on a real road. so people with after market induction kits or cold air feed are going to suffer bad on the rolling road.
 
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