^^^ Do you think there is some overlap from with the fpr rising rate calibrations to the fic in closed to open loop? and that is causing the hickup? whats your wideband telling you when this happens?

 

We kept it on just to richen it up on the higher RPMs and adjust VTEC. The high end tune is great but VTEC adjustment didnt work, the OEM ECU seems to have detuned it out. I only the the 4-5k rpm hiccup in the range he attempted to adjust vtec and only under partial throttle, and the wideband says a flat 10 when hiccuping. So from there i just back off the throttle and just downshift to get through it becaues I want to avoid fuel wash. A year after this FIC, I checked compression and got 240, 240, 240, 230 so its still looking good.

I was also wanting to change to some heat range 8 iridium plugs to to add another measure of safety.

I wish AEM would tune in to this forum so they could help solve this mystery and make the product better, it would be a win - win situation for us all.

 

Suzuka, did you flash your unit to the latest firmware and is your the 30-1912 unit?

 

Yes it is the 1912.

 

So your running factory injectors still is that correct?

Did you splice in a seperate vtec connection so you can control engagement? You and your tuner do relize the pnp harness does not connect to vtec right?

 

I am sorry I don't have an update for you today. I spent all night working on my friend's 89 Prelude Si.

And yes, Kyush, my unit is the 30-1912.

 

Yes, I am using the boomslang PnP and the Vtec connection was spliced in. Im still on stock injectors

 

i would remove the compec esm & Fpr, put in some bigger plug n play injectors, and retune, the esm is messing with the signal for the map sensor. while your at it put on a smaller pulley and up the boost a little.

 

So you have a rather hoge poge set up, not that there is anything wrong with this, I'm going to have another one here shortly which will consist of going back to my tried and true fpr/vafc2 combo with a new addition of water/meth injection, My plan is to get back up to 9-10 psi wile still retaining my stock ecu/injectors, and the best part of all is I have full control and the brains behind all the tuning. I would have eventually learned the fic and maintained all future tunes with this but as mentioned it didnt work for me. Anyway...

At your boost level/fuel requirments and with your fueling hickup, I would do one of two things in your case. Ditch the fic all together and rely on the fpr to deliver the extra fuel you need up top, since its your stock injectors that are going to be the limiting factor there, not the fpr. And I would use a vafc2, tried and true to deliver your vtec control and lean out your pre vtec rpm which is needed due to the increased fuel pressure ramp up of the fpr. Your getting very little service from your fic, in only asking it to do what the fpr can do just as well, you are giving up your manual control of vtec and fuel adjustmets and getting an anoying hickup in return, no offence but I dont know who talked you into utilizing your current config but its allot of waisted money and effort with little result and its actually providing you with a lesser tune by your hickup issue.

The other option is If you want to hang on to the fic, then use it to whats its supose to be capable of, you have already invested in the vtec wiring, ditch the fpr all together and return that to stock, put atleast some 440cc injectors in there and make the fic work and do whats its supose to do in the config it was meant. You can safely run 9-10psi this way and you still wont have to touch the stock timing map. Just my 2 cents

 

I agree with everything, except I still fail to see how the esm would cause any issue.