DeatschWerks dw200 in a 2004 RX-8 ???
09-30-2019, 07:22 PM
#1
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DeatschWerks dw200 in a 2004 RX-8 ???
So my dw200 will arrive tomorrow. Honestly, I did very little research other than what was a good, proven high flow fuel pump used in the RX-8. Since ordering I've been reading up on the pumps used in our cars and it seems some things I'm reading are saying the high flow pumps wont work in the earlier models. Although I find other posts saying they're the best thing since sliced bread.Can someone give me a definitive answer on if I should install this pump tomorrow and if not why ? Thanks for taking the time.
10-01-2019, 11:34 PM
#3
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I checked the codes and I now have a p2102....throttle actuator circuit? So I'm guessing I was experiencing limp mode. No matter how much gas I gave it i just limped along. Why would replacing the fuel pump cause this ? It was fine before ....
10-02-2019, 07:18 AM
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Problem SOLVED.
I removed the pump to check and see if maybe I made a mistake with install, but couldn't find anything wrong. So I reinstalled and performed an ESS reset. My thinking was that my fuel trims were jacked due to a rough idle, misfire , possible vacuum leak issue I've been dealing with and it looks like I may have been correct. After the rest she runs like a scalded dawg Very noticeable improvement in the low-midrange pick up/acceleration. The car just pulls so much stronger now.
I removed the pump to check and see if maybe I made a mistake with install, but couldn't find anything wrong. So I reinstalled and performed an ESS reset. My thinking was that my fuel trims were jacked due to a rough idle, misfire , possible vacuum leak issue I've been dealing with and it looks like I may have been correct. After the rest she runs like a scalded dawg Very noticeable improvement in the low-midrange pick up/acceleration. The car just pulls so much stronger now.
12-09-2022, 03:15 AM
#5
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I recently installed the dw200 myself and experienced similar issues (without doing the siphon modification like mazdamaniac). After revs in neutral the car tries to stall when reaching idle at 1k rpm again. I also got the p2102 fault code aswell as the System too lean fault code. How did you reset the ESS? Or did you clean it? Did you do the siphon modification. Thank you for your time.
12-09-2022, 08:56 AM
#6
that never ends as well as it could or should.
if you put a new factory pump in it the “runs like a scalded dog” result would be exactly the same. The general problem with doing a fuel pump swap on an S1 RX8 is there’s no way to replace the internal fuel filter. Because it was intended to swap out the entire fuel pump module which then replaces everything.
the alternative is to swap in an S2 pump module, which requires a few modifications to do and is documented on the forum. Because the Denso pump in ot is more reliable and close to thi output of the DW200 pump. More importantly, Mazda sells the internals separately on it like the filter, PRV, etc. The PRV is also a contained metal housing with everything inside. So it doesn’t require having to weld the plastic cap on like the S1 pump does.
the moral of the story being that some basic research/planning first is *always* the wise thing to do.
.
if you put a new factory pump in it the “runs like a scalded dog” result would be exactly the same. The general problem with doing a fuel pump swap on an S1 RX8 is there’s no way to replace the internal fuel filter. Because it was intended to swap out the entire fuel pump module which then replaces everything.
the alternative is to swap in an S2 pump module, which requires a few modifications to do and is documented on the forum. Because the Denso pump in ot is more reliable and close to thi output of the DW200 pump. More importantly, Mazda sells the internals separately on it like the filter, PRV, etc. The PRV is also a contained metal housing with everything inside. So it doesn’t require having to weld the plastic cap on like the S1 pump does.
the moral of the story being that some basic research/planning first is *always* the wise thing to do.
.
12-09-2022, 08:57 AM
#7
that never ends as well as it could or should.
if you put a new factory pump in it the “runs like a scalded dog” result would be exactly the same. Which is more accurately stated as it likely runs the same as all the other ~175 whp RX8s. The general problem with doing a fuel pump swap on an S1 RX8 is there’s no way to replace the internal fuel filter. Because it was intended to swap out the entire fuel pump module which then replaces everything.
the alternative is to swap in an S2 pump module, which requires a few modifications to do and is documented on the forum. Because the Denso 65C pump in it is more reliable and close to the output of the DW200 pump. More importantly, Mazda sells the internals separately on it like the filter, PRV, etc. The PRV is also a contained metal housing with everything inside. So it doesn’t require having to weld the plastic cap on like the S1 pump does.
the moral of the story being that some basic research/planning first is *always* the wise thing to do.
.
if you put a new factory pump in it the “runs like a scalded dog” result would be exactly the same. Which is more accurately stated as it likely runs the same as all the other ~175 whp RX8s. The general problem with doing a fuel pump swap on an S1 RX8 is there’s no way to replace the internal fuel filter. Because it was intended to swap out the entire fuel pump module which then replaces everything.
the alternative is to swap in an S2 pump module, which requires a few modifications to do and is documented on the forum. Because the Denso 65C pump in it is more reliable and close to the output of the DW200 pump. More importantly, Mazda sells the internals separately on it like the filter, PRV, etc. The PRV is also a contained metal housing with everything inside. So it doesn’t require having to weld the plastic cap on like the S1 pump does.
the moral of the story being that some basic research/planning first is *always* the wise thing to do.
.
Last edited by TeamRX8; 12-09-2022 at 09:02 AM.
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