Best N/A mods

Reply Subscribe

Thread Tools

08-05-2016, 03:31 AM

#31

Tim S

Join Date: Mar 2011

Location: West Sussex

Posts: 588

Likes: 1

Received 4 Likes on 4 Posts

Quote:

Originally Posted by Ultra_Nexus

Measuring the overrun to give flywheel power takes into account ratios and gears etc, whereas a whp run will change per gear used.

I've been told calculated flywheel horsepower changes per gear used as well. Higher losses in lower gears means bigger correction factor and higher apparent fly figures.

Reply Like

08-05-2016, 03:39 AM

#32

Member

Join Date: Apr 2004

Location: Sunshine Coast - England UK

Posts: 33,842

Likes: 2

Received 22 Likes on 20 Posts

Uh-oh, dyno debate

A decent dyno will calc losses on coast down, so it factors whatever gear you are in.

My 310 bhp was on a hub dyno but that's atf, think it was 270 ish at the wheels.

Reply Like

08-05-2016, 04:04 AM

#33

Toms1989

Join Date: May 2012

Posts: 1,923

Likes: 8

Received 32 Likes on 25 Posts

Mine started off as 231bhp and 151ft lbs as per Chris's EFI dyno peak figures.

Added:-
AEM V2 intake.
AEM EMS2 ECU.
Tegiwa/Js replica manifold.
Invidia N1 unresonated test pipe.
Milltek 70mm single exit exhaust.

Went back to the same dyno and remapped there. She made 244.1bhp and 157ft lbs torque peak figures Not to mention 20bhp gain mid range along with similar torque figures.

Reply Like

08-05-2016, 04:44 AM

#34

Flipz

Join Date: Jul 2012

Location: Peterborough

Posts: 254

Likes: 0

Received 0 Likes on 0 Posts

Mine came in @ 225 whp and 165 lb/ft on a Dynapack hub dyno with 2.2L Spoon block, AEM V3 intake and cheap exhaust (now back to OEM), mapped on AEM series 2. Graph below shows the gains over a completely stock S2000 they had in earlier, it's surprising how much you gain from the extra capacity - low RPM torque is very nice now too.

Probably still cheaper to get a SC/turbo kit though...