Chevron Techron
 

Two different E.P.A certification engineers told me to put nothing but Chevron supreme fuel in the new cars we built at Shelby American & Saleen Mustang. 1999 Shelby Series 1 & 1994 Saleen SR351. I have never had a fuel problem since then & no need to use additives.

Unfortunately, that is not an option here. I do stick with Tier 1 fuels though, Shell or Sinclair. The Sinclair is at least ethanol-free!

Same here, no Chevron or Texaco gas stations near me. I do the same thing as you, I get ethanol-free gas from Quick Trip.

If the injectors were performing so poorly that the engine fell flat at 5200 rpm, then they are still performing poorly. The techron might have unplugged them a bit but you can be sure that they still drip, have poor spray patterns, and are out of calibration.

The fix in a bottle might help the situation but it doesn't fix the problem. I'd really recommend pulling the injectors and having them cleaned and calibrated. You'll be truly shocked at how much better an engine runs after having this done.

And if you haven't replaced the fuel filter in awhile, I'd do that too. You'd be amazed at how dirty even good gas is these days: http://986forum.com/forums/boxster-general-discussions/70474-dont-forget-replace-fuel-filter.html

Here is the report on my fuel injectors that I recently had cleaned/calibrated. The engine ran fine but seemed just a little low on power.

http://986forum.com/forums/uploads02...1555780518.jpg

Tom, what do they charge to do the cleaning and calibration?

between $10 and $25 per injector depending on level of service and where you go

+ 1 on RC

Yes, the difference is amazing (very smooth running engine), also RC Engineering has great service as their turn around time is usually 24 hrs, last time I paid about $25 per injector.
.

Yes I have taken 3 sets there, amazed at how smooth the idle is after cleaning

Hum, have a company that sells remanufactured OE Bosch injectors with a 276cc flow rate and $56.58 shipped for all 6 injectors.

That seems too good to be true.

https://i.postimg.cc/XqDfvmM0/injectors.jpg

https://www.ebay.com/itm/254017616708

Hmm. They seem curiously inexpensive.

The posting says, "Re-manufactured.We remove all part number message of eBay policy.".

All OE injectors have PNs on them. I'm guessing that they don't have any part numbers because they are knock-offs (eBay won't allow real PNs on non-OE parts).

Here is what my OE injectors looked like with the PN's clearly visible:

http://986forum.com/forums/uploads02...1514571330.jpg

So what would be the downside of buying these?

Having to replace second-rate parts for OEM.

Buy cheap, buy twice.

How do we know these injectors are second rate parts?

We don’t know, but they are so inexpensive as to be suspicious.

Why don’t you buy a set and give them a try?

I don't have an issue with my injectors, car idles and runs fine. If I did buy them and said my car ran better, you all would accuse me of having a placebo effect.

How about you buy them and let us know, since all my experiences are placebo?

I did indeed change the fuel filter, and spark plugs as well.
Now since it only has 56k on it, do you really think the injectors need rebuilding?

If you used Techron ,changed fuel filter,and plugs all at the same time there is no way of telling which of the three (or combination of) fixed the problem.:confused:
Now a reason your injectors "MAY" need cleaned: Is the low miles and a 99.
It has sat for long periods of time so your injectors "MAY" be a little gummed up from setting.:rolleyes:
But it could have been a Dirty fuel filter and your injectors are fine:D