RX7 Turbo II Surging Issue While Cruising
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RX7 Turbo II Surging Issue While Cruising
Hello, this is in regards to my 88 Turbo II S4 with an S5 turbo swap.
I've been experiencing an issue where while crusing and either in boost or out of boost (doesn't matter) I will get a sudden lack of power and jerking as I continue to depress the pedal. It almost feels similar to fuel being cut. If I give it a little more throttle it kind of powers through this feeling and drives normally and then it will start surging again.
Some Background:
2 550CC Primaries
2 720cc Secondaries
All cleaned and flowed tested with only about 5 miles on them.
New TPS from Atkins Rotary
Freshly Built Hybrid turbo with EWG from BNR
I'm currently an RTEK 1.7, this issue could simply be the car needing an ECU and tune but I still feel something else is going on. Any help would be greatly appreciated thanks.
I've been experiencing an issue where while crusing and either in boost or out of boost (doesn't matter) I will get a sudden lack of power and jerking as I continue to depress the pedal. It almost feels similar to fuel being cut. If I give it a little more throttle it kind of powers through this feeling and drives normally and then it will start surging again.
Some Background:
2 550CC Primaries
2 720cc Secondaries
All cleaned and flowed tested with only about 5 miles on them.
New TPS from Atkins Rotary
Freshly Built Hybrid turbo with EWG from BNR
I'm currently an RTEK 1.7, this issue could simply be the car needing an ECU and tune but I still feel something else is going on. Any help would be greatly appreciated thanks.
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Anyway I can check the AFM and ensure proper function? Right now the AFM is mounted to the turbo inlet via a 3" stainless pipe. The is defiantly larger than stock maybe the RTEK can't properly handle the uncreased airflow?
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mine would surge at part throttle too, i think it was in closed loop, and all the mods made it a bit lean, so instead of the 02 cycling and its not noticeable, the engine goes from a little lean to not running to a little lean. it isn't really anything to worry about. you could try unplugging the O2 sensor, and see if it changes
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mine would surge at part throttle too, i think it was in closed loop, and all the mods made it a bit lean, so instead of the 02 cycling and its not noticeable, the engine goes from a little lean to not running to a little lean. it isn't really anything to worry about. you could try unplugging the O2 sensor, and see if it changes
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