I had my car on the Dino today. Something just is not right. My torque peaks at 2500 and the power curve is almost flat. AFR is around 13:1 to 15:1 I think that my ignition map is not correct. How many deg. of advance should I be running at full throttle? I'm using hitmans way of zeroing the timing.

 

Well, I'm going to try some road tuning today. I'm going to run 28' total advance. (locked)

 

28* is a little high. for a stock engine I would not go over 24*. you dyno sheet looks like you have a large restriction. what is the setup of this engine. what porting, intake, exhaust, etc?

 

Thanks for your reply. Engine is stock port, RB Exhaust (single) Stock intake. The road "tunning" seemed to go good today. I got some lean problems fixed (or at lest better) But it feels like somthing is not right. I'll back the timing down to 28* But I guess I'll still run it locked. If you would like to look at my map I'll email to you. Thanks

 

sure tim@wanaboo.com

 

Are you're 6 ports opening? Is your secondary throttle plates opening? It looks like a pretty hairy restriction.

 

Six ports are removed. And the secondarys work OK. Thanks for responding though.

 

28-degrees total advance doesn't seem unreasonable with an NA...

The one problem is that NA's usually respond better when tuning versus TPS load rather than most of us in MAP/load mode.

I've never done an NA in TPS mode, so I have no idea what the (fuel) maps should look like.

The tuning looks wrong if it's peaking at 2500 - it should be peaking at between 3000RPM to 5000RPM for a healthy motor.


-Ted

 

Thaks for the reply Ted. It seems like every time I change the timing the fuel maps are off. So I haft to re-tune. Well not that it was ever tuned good. I think I might bump the timing up 2* and keep it locked. Then do some good road tiuning. I'm also going to try and find somone near me that knows how to tune a Rotary. The local shop is good but they just don't have a lot of experence tuning rotarys.