I haven't really noticed a difference with the increased accuracy of the boost control, but I think I like it there either way. This is mostly because my boost maps were/are not that great and I'm still dialing them in, but they are taking a back seat to getting my fuel on-spot after a new injector install.

 

I can't test on an 03-04, but I already have 96530006 on my 05 and am ready to test v6...I've been running v5.x forever w/ mapswitching, ecu controlled boost, etc...can't wait for v6!

 

Tephra,

I am in need of some clarifications regarding the alt map switch and alt. IPW startup due to losing power during cranking.

1. The timer for map switch activation is this value used for de-activation or soon as the switch loses the power the maps switch back to regular maps?

- Why I am curious is because if we set the timer a littler higher say 3 seconds, and just turn the key to ign. and then after 4 second fire the car the alt maps would still be in place even though the map switch loses the power during cranking. (3 seconds is just an example)

Now the only place I know of to get a constant power signal is at the ecu and splicing into my ecu harness is not something I want to do nor ever will. I need to be able to use the alt. ipw map but if the ecu switches back soon as the switch loses power during cranking I'm not sure any other way to make it work....

Also would it be possible to put a delay timer for de-activation that would keep the ecu in alt maps for a determined amount of seconds after the switch is powered off? so during cranking the ecu still uses alt maps. (Unless of course this is how it works already???)

Thanks - hope I didnt royally confuse you...

 

yeah instant fallback on altmaps when power goes under level.

you need to use a constant +5v source. jack of trades harness should allow for this... You will need to splice into the ECU harness.

 

That is what I was afraid of......there is no way to add a timer to hold it in alt maps for an extended amount of time?

I have my own harness I made but I get power from the fuse panel as I hate tapping into the ecu harness.....

 

it could be done - but I dont think many people would use it.

just tap into the harness - its pretty harmless otherwise find a constant +5v... but that might drain the battery

 

darn.....

yeah i know it can be harmless I just hate cutting up factory wiring but it seems I may have to look into it because I need this for E85 switching.

an option would be if i can find a female connector for the IX pins and make a small splice harness that would require no cutting. Just unplug ecu pin, plug into female then run 1 new wire out w/ pin back into the ecu and the other to the harness. But I doubt a female plug exists or easy to get to even accomplish this......

 

I realized the fuse location I used for my gauges was constant power right after I tapped the ECU harness. I'll try to get a pic of which location it was, but you can just test to find it also.

Side note, someone else was mentioning using a turbo timer harness a few pages back, but I like my solution a little better

 

You can get the +12v ignition source from anywhere you like, though I do recommend following the ECU ground cables and conecting your ground to the same ground bolt to keep any ground loops to a minimum. Since the ADC input is empty and you are just plugging in a new ECU pin, no hacking would be done at all to your factory ECU wiring. The alt-map design only draws about 30mA of current at best.

When you tap into your +12v ignition source, be sure its a TRUE ignition source (power stays on while engine is being started. +12v accessory sources shut off while cranking to conserve power for the starter. This is especially important for people running the E85 alt-map tunes where they have cold start issues. If you dont use a TRUE ignition, the ECU will switch over to the standard maps while cranking which will make for a difficult time trying to dial in their cold start settings. Hope that helps

 

That is the problem I have - I tapped into the fuse panel but its an accessory source so I lose the alt map while cranking on e85 (i need the alt ipw). I just dont want to splice into the ecu power because as I said I hate hacking factory wiring, its just not how i roll

IS there anywhere else I can pull the signal from that wont lose under engine cranking - the ecu is the only one i really know of without continuous testing, if there is one in the fuse panel I would def. like to know the location.

 

nm - just sourced a turbo timer harness for cheap, that should do the trick.

 

Pop the pin out and solder a small wire to the pin, that is what I did.

 

yeah i could do that - i just hate splicing/cutting/etc with the factory harness/wiring, especially when it comes to the ecu. (call me fussy)

The turbo timer harness should work fine........

 

Hot damn, sometimes we can get so impatient!

Here is the +12v constant source I use for my gauges (click for larger view). I'm guessing this fuse location is similar across the line, but this is a USDM IX SE drivers side fuse box under the steering column. Make sure your wire doesn't catch on anything!

Note: I believe the lower right empty location is accessory power but turns off during cranking.

 

- im not impatient I posted in response that if you have it - i would def. like to see it - and thank you for coming through sir!

now i have a choice - turbo timer harness or fuse box