Well, I am heading to the dyno and I need some tips for tuning. I have a VERY rich map with timing that is spot on. I plan on spending 1.5-2 hours on the dyno. I am going to start with the no load ranges, then do the light load, then, assuming all goes well, full throttle maps. What A/F ratios should I look for under each of these conditions?

Here are my pertinent mods:
1988 10th anniversary turbo RX7
Haltech E6K
Walbro 255 l/h fuel pump
720 cc/min primaries and 1600 cc/min secondaries
-6 AN fuel lines
3 bar map sensor
Greddy Profec B
Hybrid 60-1 HiFi turbo
Stock intercooler
Currently pushing 8psi, but will up to 15 with tuning


Any suggestions for me? I do not want to just pay someone to tune it for me, as I want to learn!

Thanks,
Kris

 

well i did my part throttle maps with the laptop in my lap, and i was rolling on and off the throttle on the rollers. when you get to boost it gets easier, because 10psi is bar number x (it can be different depending on 2/3 bar map sensor), so you boost 10 psi, look at the dyno graph and fix accordingly.

the afrs for
idle: where it idles the higest
cruise: as lean as possible

under load: remember you want it richer on the dyno, because its simulating a load, its not a "real" load. you wanna be richer than 12:1, a lot of people say 11.5 a good safe afr

mike

 

What sort of EGTs should I be looking for under full throttle, cruise and idle?

 

i dunno, i dont have an egt. you want the full throttle close to the idle temp though, if its not and the afr is right adjust the timing

mike

 

Excellent. Thanks.