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Great thread! Only having recently found it I had a lot of catching up to do, it took me about three sittings because there is so much of it.

So then - we're back on the Dynapack at Abbey Motorsport next week for mapping. What's it going to make? :popcorn:
I love a good guessing game, I reckon the number will be 152hp on the hub dyno. Is there a prize for the winner? ;)
 
Ha, the curry and beers were happening no matter what the result was.

So on Wednesday evening, ardler_dan came over to my house and we spent a few hours recalibrating my wideband and then doing some logging and mapping on the road. I say we, I just put the fuel in and drove the thing.

Then yesterday I drove it over to Abbey Motorsport so that ardler_dan from Ardler Automotive could map on Abbey's Dynapack. For those that don't know, the Dynapack bolts direct to the hubs and reads the torque there. It's much more accurate than a rolling road and more flexible and controllable for tuning on.

Initially the verniers were put to good use as numerous different inlet and exhaust cam timings were tried until a picture was built up of how adjustments were effecting the torque band. With the timing dialled in to where it needed to be (incidentally, way off the specs Maruha recommend) Dan then worked on ignition timing and fuel maps at different load sites throughout the rev range. After about 4 hours on the Dynapack we finished off with some more road mapping to smooth some load sites that are harder to hit on the dyno.

The result is the car idles fantastically and despite having a menacing lumpy lope to the idle that tells you it's got cams, it pulls away smoothly in traffic and allowed me to trickle along in the rush-hour traffic home. However, when opened up it pulls really hard now and headbutts the limiter in every gear including 5th.

I actually don't have the graph with me today, but off the top of my head the numbers were:

126ft/lbs
149bhp

Things to bear in mind if you're not familiar with numbers off the Dynapack: A standard healthy 1.8 will make about 90bhp at the hubs. I'm not keen on converting the measured figures to any other figure as it's going to be a guess or fudge at best. However using the same rationale Blink use in thier 'Blink Stage II Upgrade Package' thread, the BHP at the flywheel is probably between 190 - 208bhp. Dan and I were more comfortable saying it's probably in the 180-odd range though. Whatever the number is, it now gets up the road pretty well.

We've got a dip in the torque curve between about 4,200 and 5,200 that we think is down to inlet tract length that I'd like to remove and Dan thinks he has an idea about that so there's probably more to come when we get that ironed out.

It's been a long road, but I'm pleased with where we are now - I'm at Brands Hatch on Thursday so the proof will be how it performs there. Big thanks to Dan for his help this week.
 
apot on - never noticed that. very handy, thanks chap.

also cracking work on the motor - sounds like it should be an absolute demon. get some sound clips up.
 
Nice result mate and be great to get a passenger ride in it.
 
Very nice! Videos required now. :p
 
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