What did you do today to your 3/S?

**familyMAN** · 10-31-2014, 10:48 AM

Donnie has done it on his DSM. I'm not convinced I can't yet. I can get close and then goes erratic. Might only need the base fuel pressure lowered a hair. I'm actually around 45 now.

edit: I'm in very low pulsewidth zone. I probably need to play with individual cylinder trimming at idle to dial them in better instead of blanket removal of fuel. I just haven't played with it and probably won't since this setup (stock cams, stock block, tiny turbo) is very temporary.

I am curious how guys get these to idle anywhere near stoich on gas. I'm at 1mS ipw and below on ethanol already.

Edit2:

If the FIC2150 act like ID2000 (they should, same injector) anything below 1Ms is going to be tough to have any consistency. And the non-linear (bumpy) area between 1 and 1.5 is going to make it a little funky also. Lowering base FP will definitely help, but also limit my hp potential. FIC's calculator states 817whp on turbo 4 cyl, e85 at 45psi base and 90% IDC. 721whp (848 crank) at 35psi base which should be right near what my turbo can do and give my fuel pump a little help since that will likely be maxing what a single 460 can do anyway.
Flow starts to drop off on the big walbro at 80psi so 35 base plus 40 of boost keeps me below that threshold.

Guess it's time to see how low I can drop base fuel pressure. -6 return hopefully helps. But my new alternator is cranking out 14-14.2v at all times/rpms even when hot

**donniekak** · 10-31-2014, 01:06 PM

My 2.3 e85 build with the 2150's ran 37psi base pressure.

**familyMAN** · 10-31-2014, 01:23 PM

^Well there's the difference

And proof of idea without internet graphs

Did you ever try those with gas?

**Toni** · 10-31-2014, 02:25 PM

Found this on some of my valves

**Bloodlust182** · 10-31-2014, 03:32 PM

Originally Posted by Toni

Found this on some of my valves

Did your compressor wheel say hello to the housing?

**Toni** · 10-31-2014, 03:43 PM

I don't think so. Intake plenum is dry and not all the valves are caked. Just one or two(not even in the same cyl). Some have obvious oil running down them.

**Jimvr4** · 10-31-2014, 03:57 PM

Can you post the tool you're using to see that? ?

**Bloodlust182** · 10-31-2014, 03:57 PM

Is it steel or aluminum?

**sergechronos** · 10-31-2014, 04:01 PM

Ordered the suspension bushings for up front, basically going to just follow Bloodlust's guide for it. the search continues for the rear subframe and bushing stuff back there, going to get more measurements tonight and spend about 3 hours working under the car tonight cleaning crap up before cooking dinner and taking the lady to the Rocky Horror Picture Show. No homework this weekend, so going to try to get all of the underside and suspension stuff done this weekend so that I can coat at some point soon.

Going to have to go to the dealer to try to round up new rear brake hard lines. As I found last night while poking around a bit, the rear brake lines were covered by the previous twat-heads rubberized undercoating in a can..But apparently he did not do any prep prior to spraying so there's a decent bit of mess and signs of rust back there. Since I've already got the subframe out, better off just replacing it now IMO. Whether hardline or just making my own out of braided PTFE, not sure yet.