ACT sensor

[Sho Amo]

Since i will be building a custom intake for this 80mm maf, can i just set the act minimum to 150 since the sock Maximum is that number. so that it will never add or pull timing?

Also i was reading on eectuning forums that the best way to tune injectors for your car even stock your supposed to put both high and low slopes even at whatever is advertised.

is that smart? the base x2j file says 27.4H and 72L. i thought our injectors were like 24lb or somethin?

 

[HotRodKid]

put the ACT in like it belongs, problem solved. dont go deleting something the ECU uses to determine what the proper amount of fuel is

 

[Sho Amo]

im having major tweecer problems. I put s stock x2j tune from josh's website on with the exception of the rev limit and secondary control. when i turn it to 1 where my tune is and start it the car jumps drops and stalls. i can put the tweecer on the stock setting and run perfectly fine. i tryed cleaning the computer and tweecer with no change. at first the tune i downloaded from josh said 27 for injector high and 72 for the injector low in the scalars. so i put them at 24.765 for high and 24.762 for the low. This is what hawkeye13 told me to do on the phone. That made no change in my problem but i plan on keeping them there anyways (those numbers make much more sense).

Heres a screenshot of my tune.

 

[Sho Amo]

Yes, it is on four 2 bank Program.
edit: im also having a hard time installing calcon and caledit on my sisters laptop that has vista.

i hate vista......

 

[yamahaSHO]

Make sure you're running as administrator (right click - even if you are logged in as admin).

 

[HotRodKid]

your "injector slope" numbers your using actually make less sense. heres why:

say you have injectors that are rated at is 48 pounds. thats 48 pounds when open constantly. so when your running WOT, and your injectors are at like 90% duty cycle, the ecu knows they are spraying 48#/ minute

then you slow down and let the car idle, your injectors are at like 5% duty cycle. your injectors, for most of the time they are open, are either in the process of opening, or in the process of closing, they obviously flow much less fuel during these times. the PCM has to compensate for this fact. its has to treat the injector as being much larger then it actually is

this is why High slope is injector size, and low slope is a much larger number

 

[Sho Amo]

administrator in windows?

i dont see how that would make a difference but im going to try it.

edit: jason have you had trouble installing stkr on a laptop with vista? i can only get it to work on my desktop with xp.

 

[Sho Amo]

i finally got one tune to somewhat idle. the cel stays on the whole time, and fluctuates 100 rpm at idle, so i drove it for a second. if i try and give it any throttle at all it misfires.

if i load up the a9l tune and clear my codes that tune wont even start the car. it acts like my coil pack isnt plugged in.

 

[yamahaSHO]

your "injector slope" numbers your using actually make less sense. heres why:

say you have injectors that are rated at is 48 pounds. thats 48 pounds when open constantly. so when your running WOT, and your injectors are at like 90% duty cycle, the ecu knows they are spraying 48#/ minute

then you slow down and let the car idle, your injectors are at like 5% duty cycle. your injectors, for most of the time they are open, are either in the process of opening, or in the process of closing, they obviously flow much less fuel during these times. the PCM has to compensate for this fact. its has to treat the injector as being much larger then it actually is

this is why High slope is injector size, and low slope is a much larger number

Bringing your slopes both close to the actual size of the injector is the preferred method (yes pring the low slope way down), however, you can't forget the step to lower the Injector Offset in the 12-14v region.

I have not installed onto Vista as my netbook came with XP. Yes, with Vista, you have to turn UAC off and make sure you run as administrator.

 

[Sho Amo]

I followed this guide and still got nothing

Ok I got my Windows Vista 64bit laptop to work with Tweecer RT. Here's what I did. First I turned off the User Account Control then installed the software. Second I downloaded the 64bit drivers from FTDI found here http://www.ftdichip.com/Drivers/D2XX.htm as recommended by others already. After unzipping the file I stuck the whole folder in the Drivers folder under STKR 1.30. I plugged in the Tweecer via the USB cable and canceled the driver install. Then I went to Device Manager under Control Panel and right clicked on the Tweecer and selected Update Driver Software and followed these steps.

Select "Browse My Computer for Driver Software"
Then "Let Me Pick..."
Select "Have Disk"
Browse to "C:\Program Files (x86)\STKR 1.30\Driver\CDM 2.04.16 WHQL Certified"
Select "ftdibus.ini"
Then click "Open".

Why this one and not ftdiport.ini I don't know. I tried bus first and it worked so good enough for me. Let it install and once it's finished it will say "Found New Hardware" again. Do the same steps all over again for this second device and presto. Hope this helps. If you have any issues with the install let me know and I'll try to help.

Regards,

 

[yamahaSHO]

Are you running on x64?

 

[Lupo]

Bringing your slopes both close to the actual size of the injector is the preferred method (yes pring the low slope way down), however, you can't forget the step to lower the Injector Offset in the 12-14v region.

I have not installed onto Vista as my netbook came with XP. Yes, with Vista, you have to turn UAC off and make sure you run as administrator.

Considering the 2 techniques of bringing down the high slope to match the low slope, and lowering the injector offset (12-14 range):
Should these both be done at the same time together, or not at all?
I thought the offset more depended on how modern your injectors were, and how quickly they respond, versus what size flow.
Like newer accel injectors react more quickly than the 20 year old Ford stock injectors, therefore your offset has to reflect this.

 

[yamahaSHO]

Correct, the offset does effect how the injectors respond at a given voltage. When you lowering the offset (in simple terms), you are causing the injector to respond slower, therfore leaning out the mixture. When I moved to 48lbs/hr injectors, I ran out of adjustment to the low slope and had to find a way to account for the large injectors.

If you adjust the offset, you will have to adjust the low slope as the first will effect the latter.

 

[Lupo]

Correct, the offset does effect how the injectors respond at a given voltage. When you lowering the offset (in simple terms), you are causing the injector to respond slower, therfore leaning out the mixture. When I moved to 48lbs/hr injectors, I ran out of adjustment to the low slope and had to find a way to account for the large injectors.

If you adjust the offset, you will have to adjust the low slope as the first will effect the latter.

You are using the accel #48s I assume. What is your high/low slope, and offset for 12v/14v?

 

[Sho Amo]

Are you running on x64?

yep, not my computer though.

Also, shouldnt the tune from josh's website run just fine with no changes on my car? i dont understand why i should even be touching the injector slopes with stock 3.2 injectors.

 

[yamahaSHO]

With a stock 3L tune, there may be very, very minor adjustment. If you're running a 3L tune on an NA motor with just 3.2L injectors, it *should* start and run fine for the most part.

From the factory, the injector slopes are split far apart. You don't have to worry about making major changes to them until you go with larger injectors and if you go too large, you'll need to mess with the offset as explained above.

 

[Kens1992mtxSHO]

Andrew, I had calcon and caledit installed fine on my laptop with vista. Let me know if I can help in some way.

 

[Sho Amo]

i finally got calcon and caledit to open up. now i gotta figure out how to update the driver for the tweecer. every driver i have tried says that theres nothing in the folder campatible with this version of windows.

for future searching sake, this is what i used to get it up on my 64bit windows vista lap top
http://popsracing.com/download/tweecerrt.exe

Ken i texted you a few hours ago. did you get it?

 

[Sho Amo]

well i think i got it running right.
Whatever i put on 4 also goes to 1. so i had a9l loaded on 4 and i guess the x2j didnt like that.

So now im gonna try and see if 2 and 3 mimic eachother.

btw, what else can i do for naturally aspirated power with this thing? ill be building an intake for this 80mm maf tomorrow and loading the xfer function in for it.