Pre-sales questions, 1994 Mustang GT

[shovel]

Hello - just have some questions before I buy so I can get the right parts.   Looking at a PiMPxs ecu.

1994 Mustang GT naturally aspirated, manual trans with Cobra intake, SVO "X" heads, stock cam, FRPP headers, 2.5" catted X pipe & catback.  

I'm not interested in trying to get more power than it has I just want it to be reliable and smooth as warm butter 100% of the time. 

The stock tune doesn't keep up with the air it can breathe now and a mail order chip tune didn't do anything for me.   Probably a story you've heard before.


Questions:

• What's the difference in a single or dual wideband,  do they just go in the same location as the stock O2 sensors?   I assume 2 is better than 1 does the ECU use both?
  
• Does everything still work like air conditioner,  high and low speed fan,  gauges,  ABS, etc - or what do I need to do additionally to make that all work?
  
• Can EGR remain functional?   I don't live in an emissions area but I still would want to keep EGR functional if it can be. 
  
• Can evap/purge remain functional?   
  
• For the ACT sensor/pigtail listed with the PiMPxs - is that the air temp sensor just behind the stock airbox,  does the stock one work or does this replace that?  
  
• Is there an advantage to running MAF or removing MAF other than just the physical obstruction?  
  

Thanks for any advice you can offer on what I need to include when I order to make sure I don't spend another summer with this car parked because it doesn't run right! 

[Stinger]

Single or dual widebands is just whether you're running one, or two wideband controllers/sensors. ECU can read one or two. Two is better than one but one wideband is WAY better than two stock o2 sensors so most people with moderate builds run one wideband. Dual widebands are popular with boosted applications and "big nasty" n/a builds with huge cams and such.

Gauges and ABS aren't controlled by the ECU so nothing changes there. A/C is the same story. The only thing that is controlled by the ECU is the wide open throttle shutoff (which can be wired into the ECU and configured to work, but is not plug and play). With V8's there is only one fan pin available through the EEC connector so typically it's just configured to kick on both fans, or you can wire one through the expansion connector if you absolutely want independent control of them.

You can use a programmable analog to control EGR if you want. You'll not notice any difference but it's your ECU/car so you can configure it to match your preferences. Same for Evap/purge.

You already have an ACT so you don't need to add one. It's only for applications that didn't come with an ACT.

No MAF needed, makes tuning more difficult. I think 3 (out of thousands) of our customers run MAF and they do it because they are tinkerers, not because it was needed to solve some issue or fix something.

[shovel]

Excellent, that's the information I needed. So any other parts I should order besides what's in the selection boxes while adding to cart?

[Stinger]

Assuming you've already got injectors, fuel pump, etc. sized correctly and such, you shouldn't need anything more than what's in that listing.