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I used to run 800cc but my tuner wanted me to go as large as possible, so I recently upgraded to 4-way nozzles (1300cc). I was running E63 HPFP, on an e20 mix, so they wanted as much fueling as possible.
I just picked up PTG HPFPs, so I don't need to rely on meth (as much), in-case of a nozzle or pump failure. Based on what my tuner says, I may go back to 800cc (or less).
What meth system are you running? I would also run straight meth (VP M5).
I used to run 800cc but my tuner wanted me to go as large as possible, so I recently upgraded to 4-way nozzles (1300cc). I was running E63 HPFP, on an e20 mix, so they wanted as much fueling as possible.
I just picked up PTG HPFPs, so I don't need to rely on meth (as much), in-case of a nozzle or pump failure. Based on what my tuner says, I may go back to 800cc (or less).
What meth system are you running? I would also run straight meth (VP M5).
sorry for the open ended question.
the setup is: Pure 900 turbos, Weistec downpipes, ModalWorks Intakes, Weistec VTA adapters, HKS Plugs, WMI (Boost Juice ~ 51/49%)
fuel: 93
I was told to go to 1300cc but didn’t know if that was too big, which led me to asking this question. Stock fuel system, no E63 hpfp.
Current nozzles are 500cc, so small and the previous tune was trash so I switched tuners and am replacing the nozzles. It was a big jump, so I was curious to what ppl ran
the setup is: Pure 900 turbos, Weistec downpipes, ModalWorks Intakes, Weistec VTA adapters, HKS Plugs, WMI (Boost Juice ~ 51/49%)
fuel: 93
I was told to go to 1300cc but didn’t know if that was too big, which led me to asking this question. Stock fuel system, no E63 hpfp.
Current nozzles are 500cc, so small and the previous tune was trash so I switched tuners and am replacing the nozzles. It was a big jump, so I was curious to what ppl ran
🤝
Looking at your setup I would expect 600-750cc injectors , going off your WMI mix it’s a good balance of fuel and cooling .
The only way to tell is to run logs and look at your bank 1&2 trims and HP fuel pressure/ignition timing while at full load(very basic list of what you need to look at!). What software are you using to data log?
Looking at your setup I would expect 600-750cc injectors , going off your WMI mix it’s a good balance of fuel and cooling .
The only way to tell is to run logs and look at your bank 1&2 trims and HP fuel pressure/ignition timing while at full load(very basic list of what you need to look at!). What software are you using to data log?
thank you for the response. It’s currently on 500cc meth nozzles and was recommended to go to 1300cc. On the current tune, I have zero knock across all cylinders, IATs are in the 80’s, and 0 timing.
Looking at your setup I would expect 600-750cc injectors , going off your WMI mix it’s a good balance of fuel and cooling .
The only way to tell is to run logs and look at your bank 1&2 trims and HP fuel pressure/ignition timing while at full load(very basic list of what you need to look at!). What software are you using to data log?
are you mixing the meth yourself? Or do they make 60/40 premixed already?
thank you for the response. It’s currently on 500cc meth nozzles and was recommended to go to 1300cc. On the current tune, I have zero knock across all cylinders, IATs are in the 80’s, and 0 timing.
I am logging data via HPTuners (VCM Scanner)
1300cc injectors are huge , most guys that run that size are running full methanol and all the sauce , what are your trims for bank 1&2 with the current injectors ?
1300cc injectors are huge , most guys that run that size are running full methanol and all the sauce , what are your trims for bank 1&2 with the current injectors ?
I assume when you’re talking about injectors, you’re talking about the meth nozzles themselves only, correct?
I’ll have to look at the logs again, I have so many lol since tuning was done remote. I don’t know the fuel trims off the top of my head. My weakest point/biggest limitation is my HPFP without a doubt and the logs show that
I assume when you’re talking about injectors, you’re talking about the meth nozzles themselves only, correct?
I’ll have to look at the logs again, I have so many lol since tuning was done remote. I don’t know the fuel trims off the top of my head. My weakest point/biggest limitation is my HPFP without a doubt and the logs show that
I mean 1300cc are huge for meth nozzles. That’s what I’m running and I no longer want to rely that heavily on meth for power. I went PTG HPFP because I want to run eblend and reduce meth nozzle size & dependency. I believe one of the guys that runs close to 5.0 60-130 only runs like 300 or 500cc meth nozzles. The benefit is, if your meth pump fails or nozzles get clogged, you can most likely get away without cooking your block.
I assume when you’re talking about injectors, you’re talking about the meth nozzles themselves only, correct?
I’ll have to look at the logs again, I have so many lol since tuning was done remote. I don’t know the fuel trims off the top of my head. My weakest point/biggest limitation is my HPFP without a doubt and the logs show that
yes exactly I’m talking about WM injector size, If you Hpfp is starting to tank then I would move to a 750cc and recheck, the next option would be to increase to concentration of boost juice on you current setup and see how that helped. Like mentioned above you don’t want a tune that is dependant on the WM as if it fails or gets partially blocked **** gets expensive , if possible try to use WM as an charge cooler and octane booster not as additional fuel. Does you local workshop have access to xentry to test your stock hpfp as these do fail ( mine failed which lead me to the exact situation you in messing with WMI size) I ended up fitting e63 hpfps which I ran until I fitted spool units
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