i know its good to street-tune your AFR yourself, before you go to a dyno to fine tune the parameters.

less time on their dyno=save some money.

if you are going to do it all yourself, and you don't have access to a dyno......is it wise to street tune your timing?

 

There's no street tune for timing. You set your timing and you're done.

 

of course there is. i mean the timing map.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by devnull &raquo;</TD></TR><TR><TD CLASS="quote">There's no street tune for timing. You set your timing and you're done.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flamega &raquo;</TD></TR><TR><TD CLASS="quote">of course there is. i mean the timing map.</TD></TR></TABLE>

Oh man, that made me chuckle.

Anyway, if you're running a wideband (I'm assuming oyu are if you're street tuning), and if you have an egt that you can datalog, that would be your best bet. Also, are you running a knock sensor? There are some variables, but those will get the ball rolling. Just remember to take your time since it's not on a dyno where you can control things a little easier.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bakeoff &raquo;</TD></TR><TR><TD CLASS="quote"> if you're running a wideband (I'm assuming oyu are if you're street tuning), and if you have an egt that you can datalog, that would be your best bet. </TD></TR></TABLE>

wouldn't you have to hook up a wideband whether your street tuning or on a dyno? how else would you be able to know what your 'safety window' (too lean or too rich) is?

egt = exhaust gas temp? if thats what you mean by that...egt isn't something you want to use to tune. its much too flexable to set your tune to.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bakeoff &raquo;</TD></TR><TR><TD CLASS="quote"> Also, are you running a knock sensor? </TD></TR></TABLE>

why?

and you didn't say, yes, or no to whether i can tune the timing map on the street. i'm assuming i can though...i don't see why not.

can anyone tell me, why yes, or why no?

 

EGT is helpful in determining if you are denonating (knock). It can also help find where to move your timing up or down to.

A knock sensor can tell if you are knocking. It will also retard your ignition timing if it detects knock and if you are street tuning then you should disable it while you are street tuning with the EGT so that you can get more accurate results.

When you said timing, I assumed you meant the timing on the engine itself. Not the ignition map.

People still call it the ignition map, right?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by devnull &raquo;</TD></TR><TR><TD CLASS="quote"> A knock sensor can tell if you are knocking. </TD></TR></TABLE>

this is not true if you've modified your stock motor. the knock sensor is set at the factory to listen for a certain frequency. if you modify your motor, any knock that is created is going to be a much different frequency.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by devnull &raquo;</TD></TR><TR><TD CLASS="quote"> When you said timing, I assumed you meant the timing on the engine itself. Not the ignition map. </TD></TR></TABLE>

thats fine. misunderstanding.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by devnull &raquo;</TD></TR><TR><TD CLASS="quote"> People still call it the ignition map, right? </TD></TR></TABLE>

yeah. ignition map...timing map...same thing.

 

any experienced tuner should know, roughly, where the timing on a particular motor should be and should set it a bit on the conservative side while doing a street tune. Fine tuning of the timing maps, however, should be done on a dyno where visual defects and improvements can be seen. trying to determine where the timing should be with an egt gauge is just simply too time consuming a not nearly as accurate. it would be more benefial with a high HP boosted motor as egts can get quite a bit higher and will have a lot larger range

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99B16Si &raquo;</TD></TR><TR><TD CLASS="quote"> any experienced tuner should know, roughly, where the timing on a particular motor should be and should set it a bit on the conservative side while doing a street tune. Fine tuning of the timing maps, however, should be done on a dyno where visual defects and improvements can be seen. </TD></TR></TABLE>

i agree. this is the same with the fuel map as well. do you agree? rough tune on the street...fine tune on a dyno.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 99B16Si &raquo;</TD></TR><TR><TD CLASS="quote"> trying to determine where the timing should be with an egt gauge is just simply too time consuming a not nearly as accurate. it would be more benefial with a high HP boosted motor as egts can get quite a bit higher and will have a lot larger range </TD></TR></TABLE>

i'm a little confused with what you just said. your saying that its not accurate for a NA motor. but then your saying it would be better with a turbo'd car because of the "larger range".........?

wouldn't it become even more difficult because of the larger range of temps that you have to deal with? i would think that a smaller range would make things more simple.