Please let us know what you find. I may appear to want to dismiss any news but that is not the case. I just want to be sure that when or if they actually do something different it will work and not just be the same old thing rehashed yet again.

Just thought I'd share - my MY14 BRZ had crickets. I took it to the dealership 3 days after I bought it, they replaced it with the updated unit and no more crickets with Costco 93 and Mobil 93 octanes. Just recently made the switch to E85 at a Mobil and the crickets were back immediately at start up. By the time I got home they were quiet again.

TL;DR - new/redesigned pump seems to have fixed crickets for me at least.

Different fuel and temperatures have different results. It may not be the pump that changed you just hit on the right combo. E85 has been very rare in causing crickets so you have yet another variable in the mix. In order to say without a doubt that the pump changed anything you would need to run all different brands of fuel through it at varying temperatures.
I can make mine come and go at will by using certain fuels at specific times of year.

his fuel brings all the crickets to the yard

Had the "new" fuel pump installed today at Toyota.

No more chirp. I'm currently on Costco 91, which had the chirp before this new one.


Hopefully it's fixed, but I'ma give it a month or so before saying it's fixed.


2016 FRS

Let us know. Almost every person to get their pumps changed started out with "New pump no chirps" but the vast majority were back within a week.

Remember, you have to get the engine and pump HOT and you have to be running low lubricity fuel, like gasoline with 10% ethanol sold at most pumps in the US. Then you'll know if its chirping or not.

Here's a glimpse of the Subaru TSB# 09-54-12R, which is dated 9/27/16

http://i.imgur.com/94HR4DQ.jpg

Embrace the crickets. If it ain't broke, don't fix it.

Draw a wide line from Alaska to South Florida, via New York. I've fueled in all those US states, and Canadian provinces, and never heard a single cricket.

With forced induction, etc... for almost 30,000 miles.

I've always thought the "bad fuel" or "poor lubricity" argument was, at best, a lip-service band-aid for very poor manufacturing tolerances, and very poor material quality control.

Automotive gasoline has very low lubricity, and the variation between fuels is inconsequential.

Similar issues are evident all over the engine and car, from axle nuts to sealing surfaces. Why should the DI fuel pump be any exception?

Do you happen have a pdf copy or a full pic of the latest TSB revision? Curious about what the changes are compared to the last one.

I don't think it is lube related and not all the fuels that create them for me are "bad quality" but I do know without a doubt that if I go to any Esso station when it is 75 degree or more out I WILL have crickets. I can run just about anything else when hot and Esso when cool with zero issues but can turn them on just by using Esso when it is hot out.

I agree that it's tolerance & material based, combine with the fact that a DI pump is pushing several thousand PSI of fluid (even at small volume) it's a hard nut to crack. There are SAE papers about trying to solve a noisy HPFP because adding weight for sound deadening is counterproductive. I bet Bosch, Delphi, and Hitachi have spent hundreds of thousands, if not millions of dollars each trying to make a quiet HPFP.

http://papers.sae.org/2013-01-0253/
http://papers.sae.org/2011-01-0930/

I haven't heard crickets in 3 years and 40,000 miles, 99% of my driving is within a small region. I think that for a powertrain designed for a <$25k price point suffers from looser QC and as such the pump is designed to 'wear in', I'm not the only one who's had their pump go quiet after 'breaking in' and a few got lucky having one in spec off the shelf.

And his chirp, is better than yours. He could teach you, but he'd have to charge...