its fine if its going 40psi boost.
where in the world are you?
take 30% out of the fuel map, all over the whole map. leave the ignition where it is, you'll need more so no worries.
Drew
Map wanted for cosworth yb 7,4/1 comp gt3582r turbo
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Re: Map wanted for cosworth yb 7,4/1 comp gt3582r turbo
OK. Your profile doesnt state where on earth you are from, if English is not your native language that explains a little, and apologies on that front. But the more clear and concise information you can give, the easier it will be to try and help.
I know 7.4:1 is very very low for any engine these days, but it will certainly add a huge safety margin with your tuning. Most turbo engines would be over 8:1 these days, even old Cossies, and even when running silly boost.
Back to the original query then. I dont follow why you need another map, when you have had the car running for 6 years already ?
If you have just fitted 1000cc injectors, that's approximately 60% larger than you had before, assuming flow data is accurate and same fuel pressure etc.
SO just take your entire fuel map and remove 60% from it.
ie select all cells, hit F5 and -60%
That will give you a starting point. After that the engine must be mapped properly by a competent person.
I know 7.4:1 is very very low for any engine these days, but it will certainly add a huge safety margin with your tuning. Most turbo engines would be over 8:1 these days, even old Cossies, and even when running silly boost.
Back to the original query then. I dont follow why you need another map, when you have had the car running for 6 years already ?
If you have just fitted 1000cc injectors, that's approximately 60% larger than you had before, assuming flow data is accurate and same fuel pressure etc.
SO just take your entire fuel map and remove 60% from it.
ie select all cells, hit F5 and -60%
That will give you a starting point. After that the engine must be mapped properly by a competent person.
Re: Map wanted for cosworth yb 7,4/1 comp gt3582r turbo
Thanks,i am from Norway ,ignition is difficult to adjust fuel is ok to adjust thanks for f5 ,boost pressure target is 2,4 bar
Ignition at 3bar
4000rpm is 10
4500 ,10
5000,12
5500,12
6000,13,5
6500,13,5
700013,5
I have run the gt3071r for 6 years but I've switched to turbo gt3582r so I can not run with the same map
Ignition at 3bar
4000rpm is 10
4500 ,10
5000,12
5500,12
6000,13,5
6500,13,5
700013,5
I have run the gt3071r for 6 years but I've switched to turbo gt3582r so I can not run with the same map
Re: Map wanted for cosworth yb 7,4/1 comp gt3582r turbo
You can if you are using MAP for load sensing! Unless you have physically changed the inlet tract, manifold, valves etc. you'll only get greater air flow with more boost! Just because it is a bigger turbo - it can't get more air through a given hole without increasing the pressure.I have run the gt3071r for 6 years but I've switched to turbo gt3582r so I can not run with the same map
Re: Map wanted for cosworth yb 7,4/1 comp gt3582r turbo
Tuned engine finally,645bhp and 750nm at 2bar,but the tuner was not satisfied with the Interpolation