• SHOWROOM
  • Nick's Two Tone 1989 AW11 MK1.5 (p.21)
2014/05/27 13:42:19
MCT_MR2
You'll get used to 200rwkw quite quickly, although it may be different for you having a bigger engine. I think you'll end up getting a power fc and tuning it.
2014/05/27 13:56:26
Mrskylighter
MCT_MR2
You'll get used to 200rwkw quite quickly, although it may be different for you having a bigger engine. I think you'll end up getting a power fc and tuning it.



I'd say your prediction is very likely to happen :) The Power FC is an easy purchase as its cheap and is plug and play. With stock cams tuning should be cheapish.
 
I got carried away on my last MR2 (getting used to the power) and ended up with 316RWKW. I don't want that to happen again haha. A stock sized turbo is all I need in the Adub.
2014/05/27 16:11:18
MR2QIK
Max I ever saw was 235rwkw, power fc tune by autotech with forged pistons, sidemount & 272's. You prolly wont need injectors if you have pump already. Got me into the 11's.
2014/05/27 16:12:20
MR2QIK
Yeh, tune it for 20psi with fc. Big diff from ecu limited 16-17psi.
2014/05/27 18:20:18
Mrskylighter
MR2QIK
Max I ever saw was 235rwkw, power fc tune by autotech with forged pistons, sidemount & 272's. You prolly wont need injectors if you have pump already. Got me into the 11's.



I'm pretty sure the car has a Walbro pump but not 100% certain. What are the stock 540cc injectors good for? I thought it was just over 200rwkw? 
2014/05/27 19:13:20
MCT_MR2
well, if you were to use perfect world formulas, you need 5.5cc of fuel per horsepower made.
 
So, 235kw x 1.36 equals 319.6hp
 
we will work with an over the top drivetrain loss of 30% so 319.6 x 1.3 equals 415.48 hp at the engine.
 
so 415.48 / 4 x 5.5 equals 571cc injector.
 
Which works out to a 6% difference between the 540's and the formula.
 
Drivetrain loss is bumped up in the calcuation i used, same as the conversion from killowatts to hp, but based on those numbers, you could probably get away with a reg bumping the base fuel pressure up to 3.5-4  bar from 3 bar.
 
variances in engine efficiency etc will alter it, but using the formula, you will max out the injectors at around 220rwkw.
2014/05/27 21:19:10
Mrskylighter
Thanks for spending the time to work that out. Much appreciated. Looks like the 540's will be alright with the stock ecu but probably safer to move up to Sard 800s if I get a Power fc to squeeze a little more out of it.

I think I'll pop the K1 on with the Berk DP, get the 3in exhaust done and pop it on the dyno checking the AFR whilst setting the boost to 17psi. If it passes 200 at the wheels I'll leave it alone for a bit.
2014/05/27 21:43:46
Dudeman
Mrskylighter
... If it passes 200 at the wheels I'll leave it alone for a bit.



Think so?...
2014/05/28 00:34:52
MR2QIK
540's max around 220-235rwkw. I upped the fuel pressure for a bit extra. Hayley stretched hers much further but I wouldn't recommend that.
2014/05/29 12:41:13
Mrskylighter
Ordered a set of BC BR coilovers this morning for the Adub with 4kg front and 6kg rear springs.
Roughly 7 days for the custom order to be in my hands ready to install.
 
Funny thing is my wife said I should get them and even paid for them :) Bizarre
 
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