NathanBoutin

So I don't have a specific question regarding setup or calibration as we've worked thru most of the major hurdles already.
The car is a 88' RX7 13BT with a semi peripheral port, BW EFR 9180, 1000cc-pri/2000cc-sec and currently starts, idles and drives awesome..if you ignore a cruise/transient spot where af/r touches 15.0 but changing my "LOAD" to tps should fix that once the snow clears. For break in (learning purposes) It made 254whp/182wtq @5psi reving to 7k on a mustang dyno

In the meantime i've been reading LOTS in this section and it seems even with its "simple" nature, you can still yield a quality end result

For those at the "end result" of there Microtech tuning, is there anything i should actually expect to say "it is what it is" to? or with propper settings and mapping it can produce nearly the same drivability of stock (with exception to all the go-fast parts and their pros/cons)

NathanBoutin

I’m also going to assume the answer is no, as only the LT-16c mentions it in the wiring, but can the LT-10c utilize the flex fuel functions?

I haven’t found to much info on the function 36 screen although it’s pretty self explanatory…how much % extra fuel and ignition deg. given the “Flex %” value

NathanBoutin

More fiddling has yielded some half good results. Nailing AFR isnt hard, just time consuming but the car is totally drivable all around. Some searches say the max on 93 oct is 400hp / 15psi "ish" so we aimed for that.

https://cimg6.ibsrv.net/gimg/www.rx7...76ee20857.jpeg

This run was at 16psi for final "testing" purposes.^ Once on the street it made a tad more boost (duh) 18psi (Log below) . Comp. tested it as soon as getting back and the rear rotor was down 10-12psi on all faces, front unaffected. Cruised with no boost for 200 miles and it came back into the mid 80's.

https://cimg1.ibsrv.net/gimg/www.rx7...bd55cdc07.jpeg

My question now is how relative will the fueling be when switching to e85? will it be an across the board fuel % addition or a new fueling map completely?

j9fd3s

iTrader: (3)

its been my experience that you could add about 40% across the board, and then tweak it from there.
you would end up with a different map, but just starting with it richer across the board will be close to get it running ok

if the car has never had E85, be prepared after the first couple of tanks to change filters. its like changing detergent

NathanBoutin

Filters on deck. We mixed up some Caster 927 and the VP X85 in a jar to see how it mixes and if it settles. Will also be adding egt sensors for each rotor for more monitoring as the plugs are showing a bit leaner in the rear rotor tho I’m not sure how I’d combat this with a microtech

dguy

iTrader: (8)

40-45% is a good starting point as mentioned. For transients that number + potentially fiddling with injection timing can also be required but unfortunately you're tied to using a Microtech so you may just have to live with some stumbling. 5ish* of timing is also not unreasonable to add depending on where you've set your gas tuning.

NathanBoutin

I need to read more on injection timing. Its directly related to the porting done to the engine along with intake runner length correct?
There is an injection timing "map" adjustment but was, and am still very weary to touch it without having much info on it yet myself
https://cimg2.ibsrv.net/gimg/www.rx7...b20ee610a.jpeg