Sam44
Member +
Definitely agree the rrfpr I've seen come into its own when set to to hit high pressure at around 3.6bar using the standard 4efte ems and standard injectors with engine breathing mods. The fse rrfpr could drop the fuel pressure to around 2.6bar which kicked off the out of boost proformance. The next very good mod was the inline vacume chamber smoothening out the pressure increase to help match air delivery.
Also agree I've read alot of mixed opinions on the kemso pump. This is why when the 2x new walbro GSS342 arrive I'll fit 1 unit and test to see how it fairs against the kemso.
I could really benefit from a better/higher resolution fueling table. At present I'm 16x16 correction table on the aem piggy back. this has contributed to the out right frustration using the rrfpr.
The 1 Toyota item that delt with the initial open throttle increase in fuel pressure was the corolla tubular inlet flowing great Low rpm inlet charge Velocity almost meeting the sudden pressure fuel increase\raise in injector flow rates perfectly. This can also be seen on the 4efe Dyno graphs 1200rpm to 3000rpm against the ep80 gi graphs. Also very noticeable on the wideband gauge (very readable threw sharp throttle hits).
As always there are many ways to tune I've not had an issue with topend fueling until going over 210hp estimsted, on the tdo4hyb. so yep this is for the bigger hiters UNLESS??
I'm predicting that if the injector duty cycle requires droping across the full rpm range (in and out of boost) once I've install the 2nd walbro pump on the already set state of tune, and not just the problematic topend pressure then this in its self means that nearly all setups will benefit from this mod (improving injector efficiency/duty/delivery)
I've ordered the Evo MK4 fuel filter this filter is a bolt on mod and higher supposed flow rates. this before anything will be installed and tested.
Also agree I've read alot of mixed opinions on the kemso pump. This is why when the 2x new walbro GSS342 arrive I'll fit 1 unit and test to see how it fairs against the kemso.
I could really benefit from a better/higher resolution fueling table. At present I'm 16x16 correction table on the aem piggy back. this has contributed to the out right frustration using the rrfpr.
The 1 Toyota item that delt with the initial open throttle increase in fuel pressure was the corolla tubular inlet flowing great Low rpm inlet charge Velocity almost meeting the sudden pressure fuel increase\raise in injector flow rates perfectly. This can also be seen on the 4efe Dyno graphs 1200rpm to 3000rpm against the ep80 gi graphs. Also very noticeable on the wideband gauge (very readable threw sharp throttle hits).
As always there are many ways to tune I've not had an issue with topend fueling until going over 210hp estimsted, on the tdo4hyb. so yep this is for the bigger hiters UNLESS??
I'm predicting that if the injector duty cycle requires droping across the full rpm range (in and out of boost) once I've install the 2nd walbro pump on the already set state of tune, and not just the problematic topend pressure then this in its self means that nearly all setups will benefit from this mod (improving injector efficiency/duty/delivery)
I've ordered the Evo MK4 fuel filter this filter is a bolt on mod and higher supposed flow rates. this before anything will be installed and tested.
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