PRE OBD to OBD2 conversion?

[danbraniff]

Is it possible to do this on my 92? and is it worth it?

[p71towny]

I don't think it would be worth it, although, Im not sure what all you would have to do. Hell, you can punch your converters now and not have to have a chip burned. You could still advance your timing with a steeda timing adjuster, throw on underdrives, and a few other small details.

[gadget73]

You'd need a lot of wiring, and probably all new sensors for everything. I seriously doubt its worth the vast amounts of work involved.

[93 Marquis]

Answer to question #1: Anything is possible with hard work and $$$!!

Answer to question #2: Personally I prefer the '92-'94 Marquis body style to the '95-97. That being said...the suspension changes in the '95 model year, along with the better 4R70W transmission and OBD-II engine controls simply make them a better (aka..easier) candidate if you want to make serious changes. Only you know if it's worth it to you to keep the '92.

Ray

[mercenvy]

Personally I prefer the '92-'94 Marquis body style to the '95-97.

Ray

+65,000!

[danbraniff]

Well I payed 800ca for it and i mean its my nanas old car she now drives a 99 GS and theres only like 132000 on it wiht no rust still brand new. S oI was just wondering what I could easily do to it engine wise as well to dress it up.

[93 Marquis]

The "easy" things you can do the stock motor won't net much gain sadly. The biggest improvement you could make for HP would be to lose the factory 4-cat set-up for a pair of hi-flow converters. Then open up the rest of the exhaust to 2.25" with good flowing mufflers.

The most restrictive part of the pre-'96 4.6L is the intake design. If you up date to the newer plastic intake you'll gain a little power (even more HP if you go with a PI intake from an '01-up). The problem is a major amount of re-wiring and relocation of control parts.