[ud03803]

Kind of new to tuning for spray, so I'd appreciate any info from anyone who has done it. Trying to understand tuning AFR/Lambda while WOT on nitrous. NA I am getting 9.5-10.0 at WOT, this is with ~E70 from the pump. Since I am spraying with E70, the fuel jet for the nitrous was a guessing game (1.28 X gasoline fuel jet). I now have a wideband and I tested it today and I was seeing between 7.5-8.5 AFR while spraying and .70-.82 lambda. Is this about right, too rich or what? On my nitrous tune I dropped timing by 6 degrees from 3000RPM-up but still saw 3 degrees of KR.

Thanks

[BDPhoto519]

A few questions to help with more information... What size shot are you running? Did you change to a colder plug? I'm guessing a 150hp shot?

I'm new to the n2o game and no expert but that seems slighty rich, especilly on E. Most people seem to run a similar lambda to NA .87 ish it seems.

[Herold Motorsports]

Lambda for tuning.
On nitrous tuning I typically stick around .85-.86
Have tried a little leaner but the gains weren’t there to justify it. Just keep an eye on everything. Is this a flex set up or solely mixing and running E70?

[Adampau123]

Here for the comments.. just put a 100 wet shot on my 1le and its running .79-.83 lambda on E while spraying when its usually about .88 N/A on E. Haven't seen any KR on any logs while spraying and its at about 24 degrees of timing so I'm sure I'm leaving power on the table. It's got a 52 jet for nitrous and 31 for fuel.. next smaller jet I have for fuel is 28 but I think that may make it too lean.

[ud03803]

Thanks guys. SO it's flex tuned using the flex kit running pump flex fuel, which is about E70. I was running a 100 shot, saw no issues. Went to a 125 and saw a couple of degrees of KR. Went to a 150 and I have seen a max of 9 degrees of KR and that's when I got out of it and not going to spray again until I can get it dyno tuned with the spray. I pulled a total of 6 degrees out for the 150 shot from 3000rpm up. The juice hits at 3300. My jets for the 150 were N-60 and F-44. To see if it made any difference, I changed the fuel to a 50 but still saw 6 degrees of KR and lambda didn't change much, so something is off. I see 45psi fuel pressure low side across the board NA or spraying. It almost seems like I started seeing this weird increase in KR when I change the plugs to Brisk RR12S. But that's what you're supposed to run spraying correct? I have an appointment with SSLSX May 5th so hopefully he can figure this out. Thoughts?

[Samueldam]

Hello, I need recommendations from a nitros expert. I recently won quite a bit of money playing on real money pokie app that I found on https://auspokiesguide.com/best-casi...ey/app/pokies/ . I'd like to add two nitros to my car and would like to know if it's possible to do it myself. I have no particular experience in this field, but I think that by watching videos or reading the appropriate documents, I'll be able to do it. Before embarking on this little adventure, I'd like to know whether it's advisable to do so.