Hey, 'gasm - Chris just wired up my Walbro direct from the battery. Don't have my fp gauge installed yet so I'm unsure of my pressures, but I know it is doing well at 15 psi with my 550/1300 setup. I'm running afrs of 10 to 10.8 at that area with high 80s duty, and at 16 lbs I'm running too rich (9.2 and stumbling) and hit 97%. Using your dyno map as a base, btw. Took out another two degrees of timing across the top to compensate for our crappy gas in CA, and modded p17, 18, and 19 to get better granularity between 12 and 16 psi.

I definately need to add in 850 primaries if I want to go any higher (I have my lovely can of VP 103 unleaded sitting in the garage right now.....). 18 to 20 on that should work nice.

Beast

 

F'ing slow servers......double post.

 

I have a new map that produced better numbers on the dyno if you'd like a copy of it. -Mostly- the same but you can see from my dynos that I kept the torque up better....

http://www.zeroglabs.com/rx7/dynoresults.htm

 

I would like a copy, but I'm reluctant to advance the timing up to 15 like you did due to the fact that I have 91 octane vs. the 93 you get to use (lucky dog). 6 extra lb. ft just isn't worth a boom. However, I can have two maps - one for 91 octane, and one for the VP 103 that I now have....

Could your little dip at 4700 be your secondary transition, esp. since you have 1600's? I think you had your transition set to 50% of primaries. I lowered that to 40%. Check your logs and see if that dip corresponds to your inj. % at transition.

I'll email you for the map.

thx.

Beast

 

Actually I SOLVED my dip issue... It is boost related.

When looking at the Autometer gauge, or at the P row you're using on the PFC map, it -appears- my boost is stable, but in reality, if you graph the pressure sensor voltage in Excel, there is a dip that matches exactly with what I got on the dyno.

So I'm looking into re-adjusting my wastegate/boost controller to get a crisper opening at 14 PSI.

 

To answer the original question, yes you can run a smaller T04E with stock injectors since at 10 psi they make around 300rwhp. Just keep the boost down.

 

Read supraforums for the 12 volt fuel pump mod. You will definitely get more flow from the supra pump when doing this. It is basically the same idea as what you already have.