Need Advice on Chirps and rough idle
 

Hey! ive owned my 2013 FRS since the end of last month. Its considerably high mileage at 45k.
I have the chirps which seems to be common. I have looked on the forum for fixes and some say putting in better gas can help or replacing the high pressure fuel pump might help.

So my question-
i Just started putting 93 iin the tank last fill up. Still chirped after driving. Should i let the gas run thru the system a little to see if itll help or should i just break down and take it to Toyota to replace that part. (which some ppl on here say didnt help)

I also suffer from the semi rare rough idle. doesnt die but drops pretty low. i took it in without specfically requesting the ECU to be reflashed and they got rid of the CEL but not the rough idle. is the reflash a guarantee fix?
I have aftermarket intake and exhaust which i also heard can cause a problem.

was just looking for some opinions. any help appreciated. thanks!

Ignore the chirps, it's harmless, and many new pumps squeak as well. Octane seems to have little to do with it. Chevron seems to be the "best" for my chirps, but I also use a fuel lube. When running E85 they vanish.

Idle, dunno. DO you have any sort of software tune in your car? If not, asking for the latest ROM might be helpful.

yeah i know they are harmless but would rather them not be there but wont make me love the car any less haha
yeah i heard the chevon is "best" theory so ill probably try that next fill up, that were e85 is? and what lube do you use? sorry im pretty new to having a good car haha

As for the software tune, would reflashing it be the same as an update? or should i look into a new one. i thought there was a sticker on the car that shows when the latest update was applied but i couldnt find it .

You need a software tune to run E85. DO NOT use E85 without it. Really bad things will happen.

I use Klotz Uplon. Odd name, good stuff.

The ECU ROM's are updated fairly often. There have been five or six (I think) updates since the 13 model year. A re-flash of the stock ROM or an update to the latest ROM for your car is not a "tune". IIRC, though, one of the factory updates addressed the rough idle issue. You have either an A00D (AT) or A00C ROM. Probably!

It would not hurt to ask your dealer to flash the latest ROM for your car if you have the idle issue.

Running E85 is a serious riot. The easiest, by far, solution for that is the OFT (not affiliated).

thanks for the warning haha!
and nice do you think ill have better luck on chirps with the lube and premium gas? no hurt trying at least im sure.

thanks for all the help buddy!

Put in ethanol-free gas to get rid of the chirps. Use this to find one near you.http://pure-gas.org/

wtffffffffffffff theres not a single place inside the actual Dallas/fort worth area. even used a different site to search haha fml. thanks

^^+1^^ Did it for a few months. People will talk about adding lubricants to the fuel. Nope. It has something to do with the stabilizers that go along with the ethanol. E0 was the only thing that really did the trick 100%.

I just got sick of it owning me. Learn to embrace the crickets. <ommmmm...>

fuckkkkkkkk for texas/DFW being so big in gas youd think we'd have at least one somewhere in the city or some shit haha damnit

I still chirp with E-free, YMMV. E85 is the only thing that has killed them dead.

Cardlock(?) or whatever-they-are-called commercial places sometimes sell e-free.

so either e0 or e85? ill probably ask some people on my local 86 meet up and see what they did because im pretty sure were lacking on the e0 out here.lame

Try a fuel lube as well just for GP. Might work, or not. I suspect (not a rocket surgeon) that the noise is related to water content and cavitation in the pump.

Your mileage drops a lot running E85, too. Consider a custom tune either way for your car.