SakeBomb Garage introducing our Full Plug and Play Fuel Pump Relay Harness. Supplying direct power to your fuel pump from the battery while eliminating the step down relay in the car.


We've installed many of these relay kits on customer cars before and even sometimes during dyno sessions here at the shop. As RX7's are aging we're seeing more and more stepdown resisters fail, which can lead to lack of fuel pressure causing a lean condition. As we are all too familiar this is very dangerous for Rotary motors. We have created a fully plug-n-play system simply requiring you to de-pin one of the stock connectors to re-pin into our plug-n-play harness. No cutting/splicing or permanent modifications needed. Great for Modded or OEM cars. We built this kit with milspec wiring and silicone fiberglass fire retardant sheeting which is also abrasion resistant. We created this with the intention for this to last the life of the vehicle but also allow you to return the car to stock if ever needed.The power cable is long enough to reach all the way to the engine bay and can be shortened for battery relocations if desired.

We're putting together a pre-order GROUP BUY with a discounted pre-release price. We expect these to ship before the end of November. To participate in the Group Buy please click the following link and submit your payment after doing so, please enter your forum name to the list with your zip code to help us consolidate the GROUP BUY. We will be closing the GROUP BUY on 12/15/2019 at which point the pre-release pricing will end. Since these are being built in small batches, we will ship in order of payment received. If you would like to skip the wait please make sure to get your order in as early as possible.

More information can be found in the link below:
Plug and Play Fuel Pump Relay Harness

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Just wanted to make sure i posted in the correct place.

0.SakeBomb Garage - Paid - 94538
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Thanks you guys! If anyone has any questions or comments please feel free to post! Happy to answer anything you guys have. We’ll post more install pictures and a how to for pinning shortly But will be included in the pictorial instructions as well

 

I would love to install one of these, but I am running the OEM ECM. I need the OEM ECM to pass California smog check, also the driveability is better generally at throttle tip-in, AC compressor works correctly, etc.

What is the impact of full voltage on air-fuel ratios in the region where the step down voltage would normally be present? The information on the forum is a little anecdotal for this question - I am hoping an authority like SBG can answer the question with data once and for all!

 

The FPR should account for any additional fuel pressure or volume. So, as far as we can think it through, with a stock ECU you should be ok.

 

One would think so, but the antidotal info on the forum says otherwise. Any chance this could be validated with some data? I’m sure there are many like myself that might jump in on this if it will really work for a stock car with no negative impact. Thanks!

 

You're saying the OEM FPR can not hold fuel pressure with increased fuel flow? Can you point us to anything supporting this? We haven't had that experience here. You're saying that with the fuel pump fully powered that car would run pig rich at idle, as well as any time the fuel requirements change with the voltage stepped up. The worst possible scenario for the FPR would be with full flow at idle... we've direct powered the pump on many stock setups at idle and haven't experienced an issue like this

I could see a problem if the FPR isnt working properly, but that's the only case that would be an issue, in which case that FPR should be replaced.

 

This would imply your position is that the step down resister serves no purpose, correct?

I don't even know what a step down resister is, so I'm not being antagonistic - just trying to understand who is saying what.

 

Hey SBG, tried ordering but it says it can't be shipped to my location and won't let me pay....

 

Woah! I was not saying anything, just asking if you had confirmation that bypassing the low speed circuit did not create a change to A/F in the idle/low speed region for cars with the stock ECM. My question was based on comments from others about having to adjust their tune after making the wiring change. From your last comment, it sounds like you have already done this mod on stock cars with no ill effect, and that is good information. The product looks very good quality, the OEM connection style is superior, and it should be a good resource for the community. Thanks.

 

Shoot us an Email, we ship worldwide, but we can get you a custom invoice.

 

Any updates?

 

How much longer should we be waiting on these?

 

Hey guys, catching up on Christmas Rush but these are currently in transit. Hope to have them packed up and ready to ship before Christmas. Although, just like most things in life, we can't make a 100% that they will arrive before Christmas.

I'll post a photo of all them once they arrive, here shortly!