Need help with Magnacharger tune
10-25-2016, 02:15 PM
#21
Well I can guarantee you that IFR data in that posted table is not correct for either a return or a return less fuel system. And I doubt they have correct data for all the other injector tables either. Either try and find correct data based on a part # on the injector or buy some injectors that come with data. Either way most injectors are going to be rated at 3 bar so you have to scale at least the IFR table for the fuel pressure you are running. Don't take offense, but that is Basic Tuning 101. If you can't do that with the myriad of spread sheets around on the web then you should probably not be trying to tune it yourself.
. Believe me, I've searched many HOURS/DAYS looking for the correct injector data for the 17113739 injectors. But there is a lot of conflicting data out there. I'm almost at point of pulling them back out and spending for some that have known data.... 
10-25-2016, 02:21 PM
#22
here's a crazy idea....help the guy out instead of just telling people they're wrong......
OP.....real data that will get you much closer.
kpA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
lb/min 52.207 52.532 52.855 53.177 53.496 53.814 54.129 54.443 54.755 55.065 55.374 55.681 55.986 56.289 56.591 56.891 57.190
OP.....real data that will get you much closer.
kpA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
lb/min 52.207 52.532 52.855 53.177 53.496 53.814 54.129 54.443 54.755 55.065 55.374 55.681 55.986 56.289 56.591 56.891 57.190
10-25-2016, 02:27 PM
#23
You know back in the day before it was so PC to have to have ALL the correct injector data you would just set the IFR table for the injector size and fuel pressure and 9 times out of ten the vehicle would run OK. Not saying it isn't better to have all the correct data but before Injector Dynamics started supplying it for their injectors or Banish putting out his DVDs (that some will say has questionable data), no one really had real data for all the other tables unless it was an OEM injector you could look at a vehicle tune that used them. Even then the LS1s in the Vettes and F-bodies that used the exact same injectors would have different data in their calibrations. So is it really that critical? I think sometimes people forget that you are just tuning a vehicle with stacked tolerances, not the space shuttle.
10-25-2016, 02:29 PM
#24
here's a crazy idea....help the guy out instead of just telling people they're wrong......
OP.....real data that will get you much closer.
kpA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
lb/min 52.207 52.532 52.855 53.177 53.496 53.814 54.129 54.443 54.755 55.065 55.374 55.681 55.986 56.289 56.591 56.891 57.190
OP.....real data that will get you much closer.
kpA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
lb/min 52.207 52.532 52.855 53.177 53.496 53.814 54.129 54.443 54.755 55.065 55.374 55.681 55.986 56.289 56.591 56.891 57.190
10-25-2016, 02:35 PM
#25
here's a crazy idea....help the guy out instead of just telling people they're wrong......
OP.....real data that will get you much closer.
kpA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
lb/min 52.207 52.532 52.855 53.177 53.496 53.814 54.129 54.443 54.755 55.065 55.374 55.681 55.986 56.289 56.591 56.891 57.190
OP.....real data that will get you much closer.
kpA 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
lb/min 52.207 52.532 52.855 53.177 53.496 53.814 54.129 54.443 54.755 55.065 55.374 55.681 55.986 56.289 56.591 56.891 57.190
. Thanks!You know back in the day before it was so PC to have to have ALL the correct injector data you would just set the IFR table for the injector size and fuel pressure and 9 times out of ten the vehicle would run OK. Not saying it isn't better to have all the correct data but before Injector Dynamics started supplying it for their injectors or Banish putting out his DVDs (that some will say has questionable data), no one really had real data for all the other tables unless it was an OEM injector you could look at a vehicle tune that used them. Even then the LS1s in the Vettes and F-bodies that used the exact same injectors would have different data in their calibrations. So is it really that critical? I think sometimes people forget that you are just tuning a vehicle with stacked tolerances, not the space shuttle.
10-25-2016, 02:45 PM
#26
The point is to get the injector data close enough and then tune VE or MAF to compensate for the small variance in specific injectors from set to set. The only other way to do it would be to have your specific set of injectors flowed plus all of the voltage compensation tables plotted and min pulse adjust etc; which is ridiculous.
10-26-2016, 11:14 AM
#29
OP I've seen a lot of places selling those injectors rate them anywhere from 38 lb/hr at 3 bar to 44 lb/hr at 4 bar. I would say the data in that spread sheet looks reasonable for a starting point and the correct IFR slope for a returnless system running 58 psi. If you are going to run the 50 psi like you stated it needs to be scaled back. But since you are not running a vacc/boost referenced regulator it is going to be wrong in boost anyway. That is one reason I was saying not to worry so much about the exact data.
10-26-2016, 11:22 AM
#30
What do you mean give it a try. I thought you had all the correct data for all the injector tables.
OP I've seen a lot of places selling those injectors rate them anywhere from 38 lb/hr at 3 bar to 44 lb/hr at 4 bar. I would say the data in that spread sheet looks reasonable for a starting point and the correct IFR slope for a returnless system running 58 psi. If you are going to run the 50 psi like you stated it needs to be scaled back. But since you are not running a vacc/boost referenced regulator it is going to be wrong in boost anyway. That is one reason I was saying not to worry so much about the exact data.
OP I've seen a lot of places selling those injectors rate them anywhere from 38 lb/hr at 3 bar to 44 lb/hr at 4 bar. I would say the data in that spread sheet looks reasonable for a starting point and the correct IFR slope for a returnless system running 58 psi. If you are going to run the 50 psi like you stated it needs to be scaled back. But since you are not running a vacc/boost referenced regulator it is going to be wrong in boost anyway. That is one reason I was saying not to worry so much about the exact data.
10-26-2016, 11:47 AM
#31
What do you mean give it a try. I thought you had all the correct data for all the injector tables.
OP I've seen a lot of places selling those injectors rate them anywhere from 38 lb/hr at 3 bar to 44 lb/hr at 4 bar. I would say the data in that spread sheet looks reasonable for a starting point and the correct IFR slope for a returnless system running 58 psi. If you are going to run the 50 psi like you stated it needs to be scaled back. But since you are not running a vacc/boost referenced regulator it is going to be wrong in boost anyway. That is one reason I was saying not to worry so much about the exact data.
OP I've seen a lot of places selling those injectors rate them anywhere from 38 lb/hr at 3 bar to 44 lb/hr at 4 bar. I would say the data in that spread sheet looks reasonable for a starting point and the correct IFR slope for a returnless system running 58 psi. If you are going to run the 50 psi like you stated it needs to be scaled back. But since you are not running a vacc/boost referenced regulator it is going to be wrong in boost anyway. That is one reason I was saying not to worry so much about the exact data.
10-26-2016, 01:25 PM
#33
But still your injector data goes from 0-80 kPa. Once you go higher on the map, especially into boost, the pcm is going to use the valve in the 80 kPa column. With a vacc/boost referenced regulator you would flat line the IFR and the FPR would compensate the FP for all vacc and boost levels. Since you are not doing that trying to get exact on the injector data is not that big of a deal.
10-26-2016, 01:59 PM
#34
I gave you crap for literally adding no information whatsoever and just calling people out without helping. You can literally delete all of your page 1 posts from the thread and it wouldn't make a different. I did not realize he was using Marine injectors as everyone uses the 42# green tops.
10-31-2016, 09:50 AM
#40
Hard to believe that two new WIX FPR's could bad (both are showing about the same pressure), but I guess stranger things have happened. I'm starting to lean towards the pump, Bosch 69225. I'm going to check the pump voltage before I pull the tank, just in case it might be a wiring issue.