Timing Questions

[LEMHEAD16]

When I retard timing with the emanage I am alittle confused.

Should I retard it .75 deg per psi over 8. So at 8 psi I would start retarding it ( 8 =-.75, 9=-1.5, 10=-2.25...........)

or

Start at 1 psi and retard it .75 deg per psi(1=-.75, 2=-1.5, 3=-2.25........)

I am a little confused.

Josh

I have not said retard so much since talking to my sisters kids

[dft24ds]

I thought it was .5 degree per psi over 8psi...am I wrong?

[K240]

^^^ Youre right, its .5 degrees retarted per psi, after 8 psi....=]

[Craving4Boost]

the e-manage lets you do that? nice. my btm retards as soon as it sees boost

[huguetpj]

Yes it does, either by load or by using the pressure sensor.

[sunnys14]

not to thread jack but how did u wire your btm craving4boost? i am confused on how to wire it

[get_up_mark]

if im only running 8-9lbs then i guess retarting the base timing by 2 degrees is a little to much huh?

[sunnys14]

2 degrees isnt TOO much, but its safe. your power when not in boost will be a bit sluggish but u should be fine.

[Craving4Boost]

mark - 2dgegrees is fine, its not too much

sunny - what year is your car?

[NateDogg]

Depends on a lot of things.

Anything that can affect the mixture burn quality such as:-intercooler efficiency-engine temp-inlet air temp-turbo efficiency at specified boost-a/f ratio-exhaust backpressure-fuel octaneprobably more i cant think of at 1am..

In other words if you have a full system you can run a little more timing. If you have just a half-baked homebrew turbo kit with a small turbo and a SR SMIC you wont be able to get as much without detonating. It all depends, unfortunately.

If you have the best of everything in that list I would say you can run 8psi without retarding timing. However, if, for example you have everything except high octane gas (you can only run 91 octane), you will be wanting to retard timing at least a couple of degrees.

check out kennebell.net in the tech section there is a great article in there that relates timing/a/f ratio/octane/temps to the amount of boost you can run.

[sunnys14]

i have a 95 s14 obd1

[Craving4Boost]

sorry i have a 91 s13....you have an internal coil. but im sure lots of people on this forum has done it before

[Florida240sx]

I have a btm.It retards as soon as it sees boost. So..If I"m runnign 10lbs what should i have the dial at? around .4? Stock ECU with SAFC, and stock mafs

[Craving4Boost]

depends if you're running 91 or 93 octane

[sunnys14]

im guessing 93 because hes in florida. we get 91 pee gas because we are in cali

[Florida240sx]

yes 93

[pr240sx]

I used a restrictor so the BTM "sees" boost after 5 psi.I have a JWT ECUthe BTM is for safety

[SlIp'n'sLiDe]

im trying to figure this out as well, the jwt ecu will retard the timing will the enthalpy also cuz thats what im looking at running feedback would be nice. and do u think getting a btm would be a good idea 4 safety

[get_up_mark]

the jim wolf and enthalpy's tuned ecus will both retard the timing. jwt will pull more timing than enthalpy. if your concerned with safetly the jwt is most likely more safe as far as timing. but you will not make as much power as some of the tunes ive seen enthalpy do becuase his tune takes out less timing and use less fuel. however this info is coming from both the companies sr tunes.

[Craving4Boost]

I used a restrictor so the BTM "sees" boost after 5 psi.I have a JWT ECUthe BTM is for safety

what restrictor are you talking about?