Speedtoys

Missing from the original post:

"The other car is not mine, doesn't have aftermarket chips, and the owner has no interest in replacing or upgrading the chips in the interest of keeping it 100% stock."

It's pedantic, the original question was about a "sharktuned" car, which presumes PEMs are already in it, and it's been tuned.

Not a good place to shame additional help if the big picture is a little fuzzy.

Bulvot

The original question specifically said a car without SharkTuner chips.

Fred, thank you the answer. That is very helpful and exactly what I needed to know.

jcorenman

If I missed a query, please accept my apologies. Sharktuner Mk-2 works on 87+ but needs PEMs installed, as noted. The PEMs are what provide the communication with the ST2 box and computer, and allow real-time modification of the maps and parameters. You won't fry anything by connecting a Sharktuner to a car without PEMs, but it won't do anything-- nothing it can talk to.

For an '87 with stock chips you are limited to the WSM section on checking sensors with a meter and scope (group 24/28), tedious but works.

Cheers,

Bulvot

Jim, thanks. That's very helpful.

No worries on the response. I figured that you were busy and it wasn't pressing when I sent the email.