Cat delete + MPG tune for 96 850 GLT

[jscv]

I have a 1996 Volvo 850 GLT

In my state my vehicle is exempt from emissions requirements due to its age.

I would like to remove the catalytic converter, install a performance muffler and retune the engine to maximize MPG.

Can anyone suggest a procedure for achieving this?

[lexxicon]

No idea myself, I second your request though as I have the same model and it could definately use an economy boost.

While I'm in Canada and I dont think I could legally get rid of the cat I would love to know what I could do to tune the engine myself. I believe an aftermarket exhaust would be of benefit as well however I do not know where and how to find and compare variants.

One thing that I found, that may be of benefit to you, that gave me a huge performance and economy boost was my own variation of these mods:
Cold Air Intake (CAI) Tutorial
Cold Air Intake Mod for 850, S70, V70, C70
As my warm/cold air actuator was seized, didnt improve after disassembly and cleaning, and I could do it for next to nothing. Supposedly a common issue on these; cant remember where I heard that though. The mod has held up wonderfully so far, I can include pics if you are interested but I dont want to just go go ahead and hijack the thread unnecessarily.

Btw, this is my first post so hi to everyone who sees this.

[matthew1]

ARD and Lucky. He makes tunes (software) for Volvos that are programmed to make better use of fuel vs. the now-20-years-old factory tunes. Fuel has changed in that time, our engine control hasn't.

Read how he tunes for ethanol, for instance: https://www.matthewsvolvosite.com/forums ... =5&t=54435

[matthew1]

Oh, almost forgot, welcome, Lexxicon and Jscv.

Lex, I gave up on my CAI a few weeks ago and put the factory snorkel back in, after 4 years. The factory intake really isn't bad after all.

I'm only one data point, and it's just one opinion.