Tuning the Profec B spec II--simple version

[Liberoz]

Tuning the Profec B spec II--simple version

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[LAN-EVO3]

i know this is an old thread....but just wanted to know.

is set gain always measured in psi? or is it a setup you change on the controller.

cause mine shows a percentage value.

 

[xjokux]

mine is in psi (x10) or kpa (x100)

but im having trouble tuning it tho.

 

[LAN-EVO3]

oh ok..thats weird. mine shows it in a percentage value for set gain. which is when you press mode button twice isnt it?

how do you change that?

 

[xjokux]

only % i get is from the gain and set.

here's is the pdf for it and just profec b-spec 2

http://www.greddy.com/tech/

and it's page 15 on pdf file.

 

[LAN-EVO3]

oh ok... mine's in psi now.

so set gain should be set on 18psi (desired amount minus 4 psi) like libero said, do i put it in as 18 on the controller or 180 ( x100 kpa is how it is measure, ie 14.0 psi is shown as 140 on controller) ?

 

[xjokux]

yep that's right, 180

you'll know the difference in spooling anyway from 18 (0.18 psi) & 180 (18psi)

 

[LAN-EVO3]

no worries, ill give that a go.

 

[Liberoz]

only % i get is from the gain and set.

here's is the pdf for it and just profec b-spec 2

http://www.greddy.com/tech/

and it's page 15 on pdf file.

Thanks for that as I had left my instructions (english) at a workshop and a customer borrowed and never returned it.

 

[xjokux]

no worries

any of you guys having trouble tuning it? mayb its me cause Im still running on a stock ecu.

 

[Liberoz]

no worries

any of you guys having trouble tuning it? mayb its me cause Im still running on a stock ecu.

Mostly its hard tuning it as its easily misunderstood instructions on base settings and tweaking it from there to your own specific set up. And yes I have had my head on wall bashing tantrums before I slowly understood it.

I learnt more about how to set it up with a friend explaining it who understands it allot better than me.

 

[LAN-EVO3]

ok, so i set my SET GAIN to 140 (14psi) and advanced my exhaust came one degree.

took it for a test run and if i sit on 3200 - 3400rpm on fourth and load it up, im at 18.1 psi by around 4000rpm. which is a big difference. alot less laggier in my opinion.

one thing i did notice though, 1st and second gear are very top endish for such short gears. 1st gear hits really hard around 4600 and second is around 4200rpm. but i think thats just the effects of having 272's and 20g.

good write up btw libero