Best FICM option

[tech10002]

I've been reading all these threads about FICM tuning and rebuilt 58 volt FICMs and am trying to decide what to do. My truck runs fine and has no cold start issues. I'm just really intrigued by people saying they're picking up 2 or 3 MPG, improved throttle response, etc. Is it really worth the $350 for the 58 volt job?

I noticed somebody was offering a kit where you reflash your own FICM with a loaner programmer, but I'm having a hard time figuring out where you order that from.

Any suggestions?

[Abrannan19]

your best bet is to leave the FICM alone..thats just my advice.

[Goose350]

Leave it alone. If it messes up, then look at your options.

[Goosekiller]

Originally Posted by Abrannan19

your best bet is to leave the FICM alone..thats just my advice.

Whats your reasoning behind this?

[yosh30]

I'm also quite interested in this topic, there is so much to do to the ficm but what is really proven?

[RescueF250]

There are a few things that are proven already, with being a modded FICM, from PHP or IDP, if you then really want to get more into it then swamps that completely redo the FICM from the inside changing the volts etc.

[yosh30]

what's the pros and cons if modding like ISP and php and pros and cons of redoing it like swamps

[RescueF250]

PHP and IDP are flashes, swamps actually gets into the guts and replace parts etc.

here
Swamps Diesel Hot FICM Tests - TheDieselGarage.com

[Abrannan19]

Originally Posted by Goosekiller

Whats your reasoning behind this?

the pros dont outweigh the cons. I would rather have good cold starts then a bit quicker throttle response.

[yosh30]

You say cold starts are a con, but not everyone experiences them. Are they any other cons other than the slight chance of a bad cold start