93turbo16

LoL.. no it is just the scaling of the boost and AFR, it gets scaled down real tiny on the graph because of adding the boost sensor. I didn't know how to mess with it, so I just left it alone. AFR on that chart was about 11.8-12.0 across the board. And richened up for the street.

BoosTedZSix

i was like wtf?? where'd you see a/f ratio? boost homie :P

samson

Little video from yesterday.


http://media.putfile.com/IMGP0525


JP

HondaTuner

Looks like it pulls well, you need to hammer on it more next time though

samson

I am in the process of making a video. I had one started with the older set-up but really, I want to redo it totally because I now have a quicker car. This was just me practicing launching without FTL and what not. It rained like 8 minutes later too. I was focusing more on launching, but no worries I'll TRY to get some runs in and then go to the track soon (I hope) and then produce a tolerable video.


JP

baldur

The dyno is a tuning tool. The numbers don't mean anything on their own. It's just useful for observing the effect of changes to the engine to the power band.
A chassis dyno is useless for mapping ECUs.

93turbo16

I wouldn't say usless, that is kinda broad. But yes, the numbers don't really mean squat. But you know people always wanna see the "big numbers". Honestly, I would rather retune a car on the street after I have it on the dyno anway.

baldur

Yeah, the chassis dyno can tell you what settings make the most power. It can't tell you whether you can run that map on the street without blowing up the engine though because on the dyno you're only at full throttle for max 5 seconds while on the street you can well do full throttle for 30 seconds.

samson

Eh....When we street tune we only do 3rd gear pulls. We aren't in it for 30seconds. How do you figure that number? Like are you saying the standard 3rd gear pull apposed to a FULL 1st-4th run?


JP

baldur

To be really sure if the tune is right you need to try it out in 5th. I tend to do most of the work in third, and ease up to fourth when third is absolutely perfect. It helps a lot to have a steep hill too, then you don't need to use the highest gear to get the desired full throttle time to make sure everything works right.
In the UK it's common to compete about top speed where they do 1.25 mile runs, those take around 30 seconds to finish and any car that has only been mapped on a chassis dyno _will_ blow it's engine when it attempts that.