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Tunning for new cam 


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 Post subject: Tunning for new cam
Posted: Tue Nov 20, 2007 7:38 pm 
Stock as a Rock

Age: 31

Posts: 109

Joined: 11th Nov 2006

Gallery: 10 images

Ride: ED fairmont turbo

Location: sunshine coast
QLD, Australia

I have a ea with ef bottom end, shaved au head with steel gasket and a surecam custom cam, now what i'm wondering is if i used my spare adjustable fuel regulator and gave it more timing will i gain some extra power?



ED Fairmont: Master Power GT45, race spec T5, Wolf v4, 870cc Injectors, EF bottom end, EF Head, Surcam custom Grind Cam, Crane LX92 Coil

Posted: Tue Nov 20, 2007 9:19 pm 
Stock as a Rock
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Age: 36

Posts: 197

Joined: 5th Jun 2007

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Power: 137 rwkw

Location: sydney
NSW, Australia

Of course, but you'll have to run better fuel or it'll detonate with advanced timing.




Posted: Thu Nov 22, 2007 4:28 pm 
Getting Side Ways
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Age: 37

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Joined: 29th Jan 2006

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Ride: BA XR6 Turbo

Location: Canberra
ACT, Australia

I am wondering this as well. After dyno day on saturday, the dude said our Falcons can respond well to 5 - 10 (???) degrees advanced timing. At what point do we have to start considering 95 octane or even premium 98?

1/ Is the a general rule? rather than wait to hear and feel the knocking / pinging sound?

2/ I was gonna wait until my 1636 finally goes in. Would this be the time to bump the dizzy 5'degrees? (Autotech would tune it not me.. but just curious atm)



I like boost

Posted: Thu Nov 22, 2007 5:00 pm 
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Age: 32

Posts: 7958

Joined: 1st Jun 2005

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Ride: Falcon

Power: 237 rwkw

Location: Melbourne
VIC, Australia

EF/ELs can handle a few more degrees base with a twist of the dizzy, but they don't seem to respond to it that well, maybe because of higher comp, I dunno.

EA-EDs with stock compression f**k love it but, especially with a cam, increased overlap effectively reduces compression.
I've got about 18degrees base in mine with a Dev3HL, 8 degrees over the standard 10, and it doesn't ping on 91.
Theres no hard and fast rule but, every engine is different, some might have had the head decked 3 times from head gasket changes, so just have a play with it.

As for adjusting fuel pressure with reg, yes you could lean it out a bit, and it would probably f**k hammer for a little bit, but the stock ECU has a tendency to learn around small fuel pressure changes by looking at o2 sensor readings.
How much it can compensate, I don't know.
Probably more then you can reduce pressure without effecting injector spray pattern.



ED XR8 Sprint - S-Trim, V500, 249rwkw
BF MKII F6 Tornado - 237rwkw

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