Sorry to re-hash a common topic, but I just want to make sure I get things right.
I am going to finally install the TM and gauges that have been on the bench for a while now, and want to add a single resistor just to keep codes away. I will probably start at 10 psi and may use water injection in the near future, and run a little more boost. All I want to do is not set codes while using the turbo-master. I was going to run a 10K resistor in the signal line out of the boost sensor ('cause I have them). Do you know of any reason not to set it up that way? Since I won't be running vacuum, I just need a simple, no hassle, no risk solution.

the single resistor idea hasnt been workin for me. you might be better off by a replacement 3 bar map sensor from summit for 53 bucks. this map sensor will allow you to run up to 30 psi of boost without setting codes.

Buy a nice boost fooler from John kennedy, And save the hassel of screwing things up.

WIth only 10 PSI, a 10K would probably work.
It is best to use 2 resistors though.

Thanks for the replies.
So, two resistors in series on the signal out, or jump one to ground, or...?
JK indicates that two boost foolers (one on MAP and one on firewall baro) may be required - I really don't want to have to buy two. I'm just looking for the simplest way (maybe there is none?) two keep from coding with the TM.

It depends on what you call simple. Summit's MAP and JK's veriable switch are plug and play, but I think it's easier to soder in my own resistors, cheaper too.

1K ohms off the MAP signal and 2K ohms back to ground after it.

Thanks, Q.
I agree - for me, spending dough is not the simplest route. I should have said cheapest and most practical solution - because I can do the work and enjoy the results of something I put together myself. (as long as I don't fry my computer or limp my motor without knowing it!)

It's easier than that or I'd have screwed it all up long ago.
I see 1.50v on stock obdI MAP voltage( scanned) 65% WGDC
With the right resisters MAP reads 1.12-1.22v 79-99% wgdc