06-10-2019, 05:07 PM
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#1
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Registered User
Join Date: Sep 2018
Location: Illinois
Posts: 190
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Chevron Techron
Since in frequent several forums and FB pages, I'm not sure where I read a suggestion for Techron for cleaning injectors. I purchased my '99 late last summer, and trying to rev it, found it falling on it's face about 5200 rpm. I put the bottle of Techron in, filled the tank and started driving. I haven't pushed it until today and ...it ran right on up to redline, no problem. I'm generally pretty skeptical about fixes in a bottle, but this one seems to work. Even more amaingly, I've only run it down to just under three-quarters of a tank. So, going forward, I suppose I'll be making an occasional habit of putting in a can.
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A cynic is a man who, when he smells flowers, looks around for a coffin.
-H. L. Mencken
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06-10-2019, 06:21 PM
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#2
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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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.
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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06-10-2019, 07:18 PM
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#3
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Registered User
Join Date: Sep 2018
Location: Illinois
Posts: 190
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Quote:
Originally Posted by BYprodriver
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.
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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!
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06-10-2019, 07:54 PM
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#4
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Quote:
Originally Posted by Newsguy
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!
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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.
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2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-10-2019, 08:41 PM
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#5
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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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: Don't Forget to Replace the Fuel Filter
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.
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Last edited by thstone; 06-11-2019 at 02:53 PM.
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06-10-2019, 09:02 PM
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#6
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Tom, what do they charge to do the cleaning and calibration?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-11-2019, 04:32 AM
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#7
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Registered User
Join Date: Dec 2016
Location: Clifton, NJ
Posts: 1,135
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between $10 and $25 per injector depending on level of service and where you go
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06-11-2019, 07:32 AM
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#8
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Registered User
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,847
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Quote:
Originally Posted by thstone
You'll be truly shocked at how much better an engine runs after having this done.
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+ 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.
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06-11-2019, 10:23 AM
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#9
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Registered User
Join Date: Oct 2008
Location: O.C. CA
Posts: 3,709
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Quote:
Originally Posted by Gilles
+ 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.
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Yes I have taken 3 sets there, amazed at how smooth the idle is after cleaning
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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06-11-2019, 11:25 AM
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#10
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Hum, have a company that sells remanufactured OE Bosch injectors with a 276cc flow rate and $56.58 shipped for all 6 injectors.
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-11-2019, 12:53 PM
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#11
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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That seems too good to be true.
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06-11-2019, 01:23 PM
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#12
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Quote:
Originally Posted by Racer Boy
That seems too good to be true.
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 https://www.ebay.com/itm/254017616708
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-11-2019, 02:51 PM
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#13
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Certified Boxster Addict
Join Date: Nov 2010
Location: Los Angeles
Posts: 7,669
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Quote:
Originally Posted by KRAM36
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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:
__________________
1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Last edited by thstone; 06-11-2019 at 02:55 PM.
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06-11-2019, 03:42 PM
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#14
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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So what would be the downside of buying these?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-11-2019, 04:37 PM
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#15
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1998 Boxster Silver/Red
Join Date: Sep 2017
Location: 92262
Posts: 2,920
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Quote:
Originally Posted by KRAM36
So what would be the downside of buying these?
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Having to replace second-rate parts for OEM.
Buy cheap, buy twice.
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1998 Porsche Boxster
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06-11-2019, 05:58 PM
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#16
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Quote:
Originally Posted by Starter986
Having to replace second-rate parts for OEM.
Buy cheap, buy twice.
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How do we know these injectors are second rate parts?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-12-2019, 06:41 AM
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#17
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Racer Boy
Join Date: Sep 2015
Location: Seattle, WA
Posts: 946
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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?
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06-12-2019, 10:22 AM
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#18
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Need For Speed
Join Date: Feb 2013
Location: Funville
Posts: 2,112
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Quote:
Originally Posted by Racer Boy
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?
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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?
__________________
2003 Boxster S
| 987 Air Box | K&N Air Filter | 76mm Intake Pipe| 996 76mm TB | 997 Distribution T | Secondary Cat Delete Pipes | Borla Muffler | NHP 200 Cell Exhaust Headers |
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06-12-2019, 11:49 AM
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#19
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Registered User
Join Date: Sep 2018
Location: Illinois
Posts: 190
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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?
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06-12-2019, 12:25 PM
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#20
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Registered User
Join Date: Aug 2018
Location: Woodland Wa
Posts: 1,291
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Quote:
Originally Posted by Newsguy
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?
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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. 
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. 
But it could have been a Dirty fuel filter and your injectors are fine 
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