[SA] DC2R dyno test

[szymonsta]

myself and 00dc2 were invited by our friends at sasupra for a dyno day last weekend. we were keen to see what power difference (if any) there was between 00dc2's stock dc2r and mine. the runs were done back-to-back at morpowa garage.

the stock dc2r managed a best of 108.5kw @ wheels on this particular dyno dynamics system (mic's stock dc2r is known to be a good example with previous dyno results 1-2kw over another stock R).

my car's engine setup: stock intake, maximworks (M-bit) 4-2-1 exh mani, '98 jdm dc2r cat.converter, fujitsubo powergetter exhaust, mugen n1 ecu.
my car managed 118.0kw @ wheels.

00dc2 has both of our dyno sheets and will be posting them up here soon.
i am quite happy with the result.

it seems the mugen n1 ecu maintains a more linear air:fuel ratio in the higher rpm range where the stock ecu richens the mixture for an extra safety margin.
also the mugen ecu's power curve is steeper in the mid-range most notably, which is also felt in-car accelerating.

i have been wondering whether changing the cat to a sports type, and a mugen intake would make any signifficant further gains throughout the rpm band? ahh but so much $$ to spend..and i'd like a new clutch&fly, and some nice wheels..*daydreams*

dyno charts up soon for your interest

[black_dc_5]

I don't think running a sports cat will give so much improvement. My car used to run w/o cat + straight pipe. YES! straigt no muffler nothing. Dyno it only give 1-2kw extra. Not worth it IMO. Save ur money and get something else I reckon, clutch maybe?

[TanK]

108.5kw @ wheels for a stock dc2r is impressive

[szymonsta]

i dont think its impressive in particular, its more an indication of how the dyno is calibrated dont you think?

as a comparison, there were a couple of non-turbo supra sz-r's which pulled quite varying figures, i beleive depending to a degree on their overall mechanical condition, but in the range of 110 rwkw for a stock manual, 120 rwkw for a manual with exhaust, to 130 rwkw for a manual with exhaust manifold, cat and exhaust, and 135 rwkw for a stock manual with Trial cat-back exhaust only.

oh and my friend broke the unofficial australian record for stock-twin-turbo'ed supra, with 287.1 rwkw, only engine mods being an HKS intercooler kit, front-pipe, de-cat and HKS exhaust (stock intake, stock ecu, stock engine, stock twin-turbo's, no boost controller). impressive!

[00dc2]

results are in



and finally an overlap of both

[00dc2]

impressive gains right through the rev range.. cant wait to see what it does with a Mugen intake Szy!

[l3vnd1]

Mugen intake seems like next thing on the list if i was u.

Thats an impressive reuslt for a stock DC2R!

How many K's it done?

[00dc2]

surely raw numbers just depend on the dyno calibration/setup..

its done 140,000km (hardly any stop/go crap) and never had a problem!

[00dc2]

he told me yesterday that he will be ordering a Mugen very soon....

even i have ordered one!

[l3vnd1]

Fantastic.

So your telling me on this dyno a stock DC2R will pull a 108.5 (ATW)

But felix's DC2R with custom CAI (before his Exhaust) pulled 98 odd on the dyno (ATW)

Dyno's really vary that much? Not very accurate...

If so which is the correct dyno reading???

I was told that a stock DC2R pulls around 100ATW.

[tinkerbell]

you dont race dyno numbers, you race engines...

dynos *in general* are a TUNING tool, not a measuring tool...

but a *specific* dyno can become a measuring tool for modifications IF you keep using the same one (like felix did)...

back to topic - there is a big dip around VTEC on the Mugen ECU... maybe a tunable ECU could provide a smoother graph, whilst keeping that lovely top-end lean-ness...

the stock ECU graph shows the typical richness towards the high rpm range, going well into the 11's there... looks very healthy

[Chi]

Yeh In sydney alotta stock DC2Rs pull around the 98-100kw odd mark.

Either the dynos here read lower or the dynos up tehre read a fair bit higher.

Yeh i was gonan say the same thing as well Dave. about the dip in the dyno graph, you would want to try and smooth out the mid range better as that is what you will mostly use?

oh and my friend broke the unofficial australian record for stock-twin-turbo'ed supra, with 287.1 rwkw, only engine mods being an HKS intercooler kit, front-pipe, de-cat and HKS exhaust (stock intake, stock ecu, stock engine, stock twin-turbo's, no boost controller). impressive!

Any mods to a car that improve performance will make it "not stock" IMO.

[tinkerbell]

szy - this might feel nicer if it went like:



do you notice the dip in power?

[00dc2]

trouble is trusting an Aust tuner with your pride and joy

[tinkerbell]

i guess i am lucky then?