Strange Dyno Results; Limit Of Safc 2 Or Tuning Fault?

[Pattey21]

Hey guys got my car tuned today with my recently installed safc 2. Running a turbotech v2 boost controller.

Some strange things going on here

1. AFRs lean initially even though SAFC 2 was setup for no correction

2. I set the boost the night before on 11psi but first run shows levels just under 9psi and then it goes to 11 again after. Is this the tuner removing it initially to minimise risk of problems before tuning.

3. Graph on initial run is much smoother than the final tune the hump at the end is my main concern, is this just the limit of the safc adjusting fuel and effecting timing or bad tuning or something else.as.i notice the boost drops off then almost mirroring the peak hump.

It just seems weird to me besides the AFRS are better.the boost, power and torque curves look better on the initial run.

Edited April 12, 2013 by Pattey21

[Pattey21]

Sorry here is the graph with the AFRS

Edited April 12, 2013 by Pattey21

[Guilt-Toy]

at the end of the day you have given the guy a piece of shit solution to a problem.

when you tune with a safc you can only move the afm voltage up and down, its never going to be good like a aftermarket ecu.

stop complaining, and buy a decent ecu. congrats you have now learnt your lesson, just be glad a new engine is not needed.

[Pattey21]

i am not complaining saying "why isnt my graph perfect" i know what an SAFC does and that its not as good as a standalone, but they have been proven to produce good results for my modifications.

So if any people with previous experince having SAFCs it would be most appreciated.

Edited April 13, 2013 by Pattey21

[NYTSKY]

Basically the SAFC is just removing the R&R and changing the mixture slightly. It is not optimising the modifications therefore the end result is whatever the engine combo spits out.

Also Anthony is a tuner and a very capable one.

[Pattey21]

Basically the SAFC is just removing the R&R and changing the mixture slightly. It is not optimising the modifications therefore the end result is whatever the engine combo spits out.

Also Anthony is a tuner and a very capable one.

Yeah thats what i was assuming, cheers