IAC's, Throttle Bodies, FFI's & Standalones

[yaitsme]

Hey y'all !!

I've been honing my searching skills ... but I'll bet that the answers to my questions are buried somewhere in those 500+ post threads (or certainly in the 5000+ one)!

Since I'm apparently too damn lazy to read those uber-long threads ... I'll impose upon you a long post of my own - filling in a little background, before I throw out the dumb questions.

Ron R. & God (no, not you IJ ) willing ... I'll be going to a FF setup sometime soon. My shortlived experience with my Supra alarmed me with the heat of the charge pipe coming over the turbo - not to mention just how hot the ambient temp under the hood can be. So this .. and 4ft less piping ... has convinced me that FFI is the way to go.

Another 'change in direction' for me, is to dump the piggyback systems, bite the financial bullet, and go standalone ... AEM EMS. Trolling around the AEM forum (and here, come to think of it), I see quite a few people having issues with idle ... especially once that underhood ambient heat I was mentioning, has risen enough to begin causing gremlins. (That's about 80% assumption on my part ... coming from someone who knows about 8% of what he should :dunno. Am I wrong in assuming that underhood heat has an affect on the a/f requirements at idle? (And before you ask ... with questions like this, yes, I am having an AEM certified shop get me all dialed in)

So I'm trolling around looking at the abundance of options for throttle bodies to crown Ron R's artwork, and I notice that with - say, the Accufab's for instance - Idle speed is controlled by a set screw ... which I assume means no adjustment when those ambient temps come up. Yet, IAC's seem to be a take it or leave it kind of thing - why is that?

I hope to get some feedback on this one bowdown: *bowing as I sacrifice a teenage Supra owner slash obnoxious poster on the SM altar of antiCletus-ism*) - my 'shot in the dark' opinion right now, is to eliminate the IAC to keep the AEM calibration simpler. Will I be kicking myself for doing this later?


Respectfully Submitted

- Cletus, reformed

 

[figgie]

well i will tackle you questions as they are fair questions and that way the answer comes up next time

1) Throttle body for the Ron R FFI. This is simple. Mustang 87-93 Mustang 5.0 TB. This way you have OPTIONS. From 60mm TB all the way to a 2 liter bottle swallowing 105mm TB.

Now to clarify one thing. The stock TB and the aftermarket tb have a BASE idle set screw. It is to set BASE IDLE not to adjust to idle up (ie A/c, power steering or higher electrical loads).

2) The IAC. It is actually quite simple but most people don't understand them. So to start off. Read this post and understand how it works. What needs to happen before the IAC is turned on in a standalone is that you MUST have a steady base idle. If you don't it will make IAC adjustment like chasing your tail.

In my personal opinon the IAC is a must but to have a tuner that KNOWS how get it to work is an issue as most will actually NOT install it. In my opinion if the tuner tells you know for whatever reason (the most likely is, "oh you don't need it I have tuned xxx cars without them without an issue) will more than likely be that he does NOT know how to make it work.

one thing thoguh. Once the car is dialed in. DO NOT MESS with the tune!! Seen way to many AEM die or motors die by a change the user thought would be ok to do

 

[yaitsme]

well i will tackle you questions as they are fair questions and that way the answer comes up next time

Aww shucks - I'm flattered ... thanks for your time! (really!)

So to start off. Read this post and understand how it works.

Ya know, I'd already done part 'a' (read that thread), but part 'b' is going to require another re-read :aigo:

Once the car is dialed in. DO NOT MESS with the tune!!

Aye-aye on that one :bigthumb: ... I'll try to keep my grubby mitts off the laptop!!

 

[suprahero]

Questions.......Answers.........Thank you's.

Perfect formula for a great thread about someones problems................lol