And BTW, if any of you want to use this map that I modded, PM me and I will send it to you. I do not mind sharing it. But you do it at your own risk since each car is different even if the run the same mods. My car has a JIC dp, A high flow cat, K&N filter, a walbro, cat-back, and Evo 9 BOV.

 

nj why dont you post the map here on the threads thats way nice of you!!
but man i cant use it cause i have the v360kit damm

 

I do not know if we ar allowed to post maps in the vendor forums. If we are allowed, then I will do it, otherwise I do not want to violate vendor rules. I am sure someone would tell me if I can.

 

WOW KNOW IAM HAPPY i did what shiv said i went out to an open road and did the full throttle on 4th gear and when hitting 5500rpms i hit the brakes and i saw my afrs# go to 11.0-11.3 its totally different cause i made a 4th gear pull starting at 2500rpms and i floor it but didnt hit the brakes and the afr #'s were at 12.0-12.5 so what a difference it made shiv was so right about this! BIG PROPS TO SHIV!!

CHECK POST 156 TO SEE WHAT SHIV SAID!

 

Shiv really knows his stuff!

Did you log your timing on that run?

 

No kidding Shiv knows his stuff. Glad to hear it all worked out for you jrsimon27! It's a good feeling, eh?

nj, that's a pretty smooth looking map you have there. Those AFR's are looking good on the pull. Just for giggles, did you try what Shiv suggested? I'm wondering if your AFR's would dip into the 10's.

I've never claimed to be a tuning expert but it just blows my mind to think that a pull's afr could have, as Shiv put it, "lag". What causes that? Why isn't the AFR reading realtime?

 

Neither am I a tuning expert. I am a tinkerer and a learner. This baffles the hell out out of me.

If what Shiv is saying is correct and I have no doubt that he is, then using widebands on the road to log your AFR is worthless unless you brake your car at WOT to know what your "real" AFR is.

Also, dynojets are worthless since they are not load type dynos like a DD or a Mustang.

 

Yeah, that's why I'm hoping shiv replies and gives us an explanation.

 

nop i didnt log my timing cause have done it in the past but yeah iam happy with my outcome and yes maybe nj would dip into the 10's cause he added 4% to the fuel table, well i went out again to try it and definatly is as shiv says its completly different outcomes.
that maybe why if you logg since a 2nd gear pull and then hit 3erd gear you will see your afrs numbers differ from just a 3erd gear pull.
but we are all learning and i hope shiv chimes i an explains why is this he talked about load and time lag and he was definatly right!
nj and jeff and the rest that have wideband just try it out and see the difference

 

Trust me friend if I had the open road to test this, then I will for sure. As I said before, if I do that I will either get a ticket or end up in an accident. I do understand the logic behind it, however. There is more load on the car when you do a full 2nd gear pull followed by a 3rd gear pull and your AFR dips as a result. I have even logged this when I did a third and a partial 4th gear pull.




As you can see the AFR in 4th goes into the 10s whilde the AFR in 3rd is in the 11s. So if you tune your car in 4th gear, you will end up with a leaner 3rd gear AFR.

That should come handy when you tune for the road course. If, for example, you are running at fast 4th gear WOT track, then you will tune in 4th gear and get an ideal AFR. If you are running at a road course that is slower and use 3rd gear the most, then you will tune in 3rd gear and get the ideal AFR for that track.

I will probably tune that way when I start tracking my car.

If the maps that we are downloading from Shiv's web site were tuned in 4th gear, then that would account for the difference in AFRs that we are seeing. All of us here are logging in 3rd gear since 3rd gear is the most common gear that our cars are dynoed in.

 

nj that log is great thats what ive been asking for people to do so this confirms my 2nd to 3erd gear pulls having diff afr#'s then just the 3er gear pulls.
know iam so happy!!!

 

Had I known that this is what you have been asking for, then I would have posted this a long time ago. I have had this log for quite a while

 

yeah, but thanks anyways nj you have been very helpful with me and i hope this thread helps others.
i will leave the map just as it is from the site maybe i will just add a 1-2% to the fuel table but thats all iam so happy with vishnu products, i have been having doubts about my tune since i installed my wideband cause my car is a jdm model and i thought the maps were different but after talking to shiv he said to use the maps and to not worry about anything we just need to start to trust our tuner whom in this case is the vishnu crew and to those that have been to a dyno and have had knock maybe they just got a bad tank of gas who knows??
but for me and my logs iam very happy with the results the maps give to my car, i cant imagine how much more power shiv would extract from my car if i would have a custom tune!

 

With the knock buffer, its not about how many volts it goes up to. Its all about spikes. If it spikes way above the "noise floor", that is suppose to be knock.

 

I'm really not sure what Shiv wanted us to hit our brakes for. Aside from the fact that AFR richens up as the load gets greater......I still saw 12:1 AFR on the street during a WOT 1/4 mile pass. The WB doesn't lie. If you are seeing lean AFR's at the top of 3rd gear then you are running lean. There isn't much "exhaust lag" at 5k rpm.