bigbadboy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D@nnY &raquo;</TD></TR><TR><TD CLASS="quote">

the s300 sucks at controlling 1600s even with an fjo driver.. at partial throttle at least . the injectors suck on the street in general.

1000 rcs are my first choice they run great </TD></TR></TABLE>

i really have to disagree with you. if you know wat you are doing then it will be fine. mine drives awesome and i get awesome gas mileage and everything. they are hard to control when you have your idle set at 800 but its just a little rich nothing bad. i love my 1600's i wouldn't trade them for anything. keeps me with room to grow.

SOHC_MShue

the way it is calculated at least in neptune is the overall fuel trim adds to the main multiplier. For instance if you scale your injectors and get a main multiplier of .5 and then add 3% to the overall fuel trim then the main multiplier becomes .53 .

platinum00

I dont think there is a main multiplier in the S300. You have the injector size, Overall fuel trim and the fuel table itself.

Their is a Fuel Compensation section but I believe that is for water temp correction. All the maps I have looked at have the same values their though.

-platinum.

ham

i set the injector size back to 1000 and adjusted the overall fuel trim. i had to set it to 70% to get it to run like it was. i spent a good hour or two smoothing out the map and trying to get rid of the idle stumble... it runs really nice now.

now i have to figure out why it hits boost cut at 12psi when its set to 20psi. launch and WOT shift are off...

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by platinum00 &raquo;</TD></TR><TR><TD CLASS="quote">I dont think there is a main multiplier in the S300. You have the injector size, Overall fuel trim and the fuel table itself.

Their is a Fuel Compensation section but I believe that is for water temp correction. All the maps I have looked at have the same values their though.

-platinum.</TD></TR></TABLE>
what i'm talking about is the main scalar that is used to scale down the fuel map. For instance if you have 100 in the fuel map and you have 240 old injector and 480 new injector which will give you a scalar of .5 which will come out with a final fuel value assuming no other corrections of 500. Now if you add 3% to the overall fuel trim it is changing that .5 to .53 give you 53 as the final value.

platinum00

Gotcha... I dont think the S300 works that way, or at least mine doesnt. If it changed the scaler when you changed the old injector size to the new, why would you need to modify the overall fuel trim.

Your way makes more sense. If I changed the injector vaule from 240 to say 750. It should change the whole table via the scaler alowing it run correctly.

Or am I still missing something.

-platinum.

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by platinum00 &raquo;</TD></TR><TR><TD CLASS="quote">Gotcha... I dont think the S300 works that way, or at least mine doesnt. If it changed the scaler when you changed the old injector size to the new, why would you need to modify the overall fuel trim.

Your way makes more sense. If I changed the injector vaule from 240 to say 750. It should change the whole table via the scaler alowing it run correctly.

Or am I still missing something.

-platinum.</TD></TR></TABLE>
well say you are running an 84mm bottom end and starting out with a p72 basemap. That extra displacement would cause you to need to modify the overall.

platinum00

Logically that makes sense, but I believe the problem initially posted was just that.

If you have a stock motor (same bore, compression, etc..) and upgrade to 750cc injectors, you should be able just to change the injector sizing to 750. The poster (ham), myself and others have done this and it does not work. You need to modify the overall fuel trim to get the correct Air/Fuel.

-platinum.

SOHC_MShue

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by platinum00 &raquo;</TD></TR><TR><TD CLASS="quote">Logically that makes sense, but I believe the problem initially posted was just that.

If you have a stock motor (same bore, compression, etc..) and upgrade to 750cc injectors, you should be able just to change the injector sizing to 750. The poster (ham), myself and others have done this and it does not work. You need to modify the overall fuel trim to get the correct Air/Fuel.

-platinum.</TD></TR></TABLE>
yea i too have seen this as well, but have learned to just work around it and deal with it haha. I'm not sure why exactly, but it happens.

Turbo-charged

i really like the s300 and the rom editor 4 software (S100 S200) but i dont understand why they changed the fuel multipliers like they did. on the RE3 software it was pretty close. RE4 is WAY off and seems to get worse as the injetor gets bigger.

once you do a bunch of them you have a general idea of what you need to do to get it to run right in just a few min.

D@nnY

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigbadboy &raquo;</TD></TR><TR><TD CLASS="quote">

i really have to disagree with you. if you know wat you are doing then it will be fine. mine drives awesome and i get awesome gas mileage and everything. they are hard to control when you have your idle set at 800 but its just a little rich nothing bad. i love my 1600's i wouldn't trade them for anything. keeps me with room to grow. </TD></TR></TABLE>

I bet you dont have a wideband on your car....theres no way a car is going to run as good with 1600 cc injectors as it will with 1000cc rcs.

ham

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D@nnY &raquo;</TD></TR><TR><TD CLASS="quote">

I bet you dont have a wideband on your car....theres no way a car is going to run as good with 1600 cc injectors as it will with 1000cc rcs.</TD></TR></TABLE>

yeah, even with a perfect tune, you still see occasional dips or bounces in the AF at low rpm or idle, those injectors are barely opening

platinum00

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Turbo-charged &raquo;</TD></TR><TR><TD CLASS="quote">i really like the s300 and the rom editor 4 software (S100 S200) but i dont understand why they changed the fuel multipliers like they did. on the RE3 software it was pretty close. RE4 is WAY off and seems to get worse as the injetor gets bigger.

once you do a bunch of them you have a general idea of what you need to do to get it to run right in just a few min.</TD></TR></TABLE>

did you modify the overall fuel trim to fix?

bigbadboy

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by D@nnY &raquo;</TD></TR><TR><TD CLASS="quote">

I bet you dont have a wideband on your car....theres no way a car is going to run as good with 1600 cc injectors as it will with 1000cc rcs.</TD></TR></TABLE>

actually i do. i do all my tuning. sure the air fuel isn't dead on steady at 14.7 but it does idle smooth at 800 rpms. if you know how to tune your car injectors don't mean nothing. yea maybe they are harder to tune with but if done right and taken time on it will drive like stock just like mine does. AF cruising and in vaccume are where they should from 14.3-14.8.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">

yeah, even with a perfect tune, you still see occasional dips or bounces in the AF at low rpm or idle, those injectors are barely opening</TD></TR></TABLE>

yea my AF at idle bounces from 13.0-15.0 but it is expected from such low idle and these injectors at 1200 its perfectly dead on but i like my idle on the low side

ham

with my RC 1000s, the idle is at 800 and exactly 14.7AFR.. but it took a while to get that. my duty is at 83% at WOT, so it doesnt leave room for more power.

bigbadboy

how much power are you making??

SwappedTURBOegg

thats strange im at 72 with 400 hp

ham

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SwappedTURBOegg &raquo;</TD></TR><TR><TD CLASS="quote">thats strange im at 72 with 400 hp</TD></TR></TABLE>

that sounds right. when I made 472 on TFs dyno it was about the same. 83% is estimated... i havent hit it yet due to map calibration issues.

alexsracing

just set it to 1000cc and revise your map

D@nnY

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigbadboy &raquo;</TD></TR><TR><TD CLASS="quote">

actually i do. i do all my tuning. sure the air fuel isn't dead on steady at 14.7 but it does idle smooth at 800 rpms. if you know how to tune your car injectors don't mean nothing. yea maybe they are harder to tune with but if done right and taken time on it will drive like stock just like mine does. AF cruising and in vaccume are where they should from 14.3-14.8.

yea my AF at idle bounces from 13.0-15.0 but it is expected from such low idle and these injectors at 1200 its perfectly dead on but i like my idle on the low side </TD></TR></TABLE>


im sure your 1600 cc injectors idle at 800 rpm like factory...can you link me to a dyno chart or any info on a car you tuned?

if your saying 1600 cc injectors run the same as 1000cc's your talking out of your *** plain and simple

Suprdave

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ham &raquo;</TD></TR><TR><TD CLASS="quote">with my RC 1000s, the idle is at 800 and exactly 14.7AFR.. but it took a while to get that. my duty is at 83% at WOT, so it doesnt leave room for more power.</TD></TR></TABLE>

That's crazy...I was under 83% DC @ 570whp the other day.

How much power r you making?

Suprdave

Theres 2 ways of doing things, depending on what system you have...

WIth S300, you can set the Injector Size and change the overall trim to +/- Fuel to the entire map.

OR, you can leave the modifier at 0 and make your changes to the fuel table.

With Neptune, you can either leave the old/new injector size at 240, then subtract from the modifier tables and add fuel to the actual map.

The other way of doing it is with changing the injector sizing then adding fuel with the trim tables.

Suprdave

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by bigbadboy &raquo;</TD></TR><TR><TD CLASS="quote">

actually i do. i do all my tuning. sure the air fuel isn't dead on steady at 14.7 but it does idle smooth at 800 rpms. if you know how to tune your car injectors don't mean nothing. yea maybe they are harder to tune with but if done right and taken time on it will drive like stock just like mine does. AF cruising and in vaccume are where they should from 14.3-14.8.
</TD></TR></TABLE>

So...yer telling me you idled 1600s @ 800rpm with 14.3:1 afr at idle?

You are full of ****...period

You would be like .5ms to idle a Honda there...Find me a injector driver that can reliably open 1600cc Injectors in a B Series Honda @ .5ms and Idle them at 800rpm and I'll let you bang my girl.

D@nnY

LOL ... no its because he REALLY knows what hes doing....he can idle 2000cc injectors at 500 rpm smooth as factory....it just takes time

I think he has his wideband sensor unplugged or a screw loose somewhere else

I havent been on the board in a while but the dipshit population seems to have sky rocketed

D@nnY

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suprdave &raquo;</TD></TR><TR><TD CLASS="quote">

That's crazy...I was under 83% DC @ 570whp the other day.

How much power r you making?</TD></TR></TABLE>


on rc 1000cc injectors with 1 255 fuel pump and stock lines my s300 said they were are 107 percent duty cycle at 650 hp at high rpm and they never failed...im on 1600s now and 2 pumps