That blue wire was tapped into the TPS extension and was running into the Piggyback harness.

you can also see i am holding the IAC extension, the purple and White wire were tapped into that extension and connected to the piggyback harness as well.

Yes that hose and filter are for my IAC vent. I believe the piggy back is wired that way so it can do its thing. I have the install pdf I can email you like.


Tim

nothing that bothered me.,my set up is far from stock.all the openings in the air flow thru the intercooler were opened up and smoothed out big time.most boost I see w/ the smallest pulleys are about 4.5-5psi.eventually I'll go to a 9-9.25" crank pulley.

I have a PDF, thanks for the offer. I just need to get the tuning right now. I took out the piggyback and got it all cleaned up. Here is a look at my spark plugs. This was after about 2 hours at just idle.
And i did end up switching plugs to a NGK

So oit sounds like the piggy back was abandoned and injectors wired in, it was just never removed. It really WOULDNT affect the mefi tune, your tuner would just be tuning off the tailpipe readings yielded by the 10 injectors is all. Were his afr targets extremly rich? One mistake I have seen is IF somone put a crossover on and engine temp varies BUT they never blended out the ect table above 100 degrees it could make you run rich. Lets say it WAS 112 out, water was 90 degees, engine was running 140 or 150, he tuned for a target of lets say 11.5-1 under boost. Now, your running the boat BUT waters still "cold" compared to normal, motors running at 100 degrees, the ect table would richen it up by adding un-needed fuel. just a possibility, Smitty

Great Point! That is something i have always wondered about with the crossover. In Havasu the water in currently still cold and when he tuned it last year it was in August and water was alot warmer. Also, Havasu is connected to the river in which the river water is ALWAYS colder.

Hey Tim,

I would love to have a copy of the pdf. I can PM you my email address.

Thanks!

sent!

zzzzzzzzz