434josh Posted November 27, 2018 Report Share Posted November 27, 2018 I just wanted to make sure I have the right idea here. Turbocharged v8 with a large turbo which doesn't start to spool until 4300 rpm. Want to run a regressive dry n2o shot starting at 2700 rpm and tapering away to nothing by 180kpa or so. I am already spraying meth so i am using the 4d fuel and spark table to pull fuel and add timing when its active and the 5d to add fuel/reduce timing for the n2o. Will the 4d/5d tables when set to overlay be cohesive? If one is adding 2* but the other is pulling 1* it will all jive and add 1* total? Same with the fuel. Meth starts spraying around 170 kpa so there will be a small overlap. Any tips on how much fuel to add to start with? 100% duty will be 150hp shot. Not sure if there is any sort of calculation to determine how much extra fuel % to add. Its on e85 and max IDC I see is 57% at 6500 rpm and 15 psi of boost. (2100cc injectors) Quote Link to comment Share on other sites More sharing options...
Adamw Posted November 27, 2018 Report Share Posted November 27, 2018 3 hours ago, 434josh said: am already spraying meth so i am using the 4d fuel and spark table to pull fuel and add timing when its active and the 5d to add fuel/reduce timing for the n2o. Will the 4d/5d tables when set to overlay be cohesive? If one is adding 2* but the other is pulling 1* it will all jive and add 1* total? Same with the fuel. Meth starts spraying around 170 kpa so there will be a small overlap. Yep, thats how it works and they will all work happily on top of each other. 3 hours ago, 434josh said: Any tips on how much fuel to add to start with? 100% duty will be 150hp shot. Not sure if there is any sort of calculation to determine how much extra fuel % to add. I dont have any NOS experience but here is how my logic would approach it: Lets say you have 600HP without NOS, to add another 150HP you will need about 25% more oxygen, so I would add about 25% more fuel in this example. I would also set up some logic in my aux output conditions so that NOS is cut as some as any engine limiters are active to minimise the risk of a backfire. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.