New injectors....To Tune or Not to tune... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Batmanntexas · 07-01-2015, 08:20 AM

Ok, I'm definitely a novice with all of this tuning stuff. I'm getting ready to turn up the wick on the Whipple, and as such, am going with larger injectors, multiple fuel pumps, etc.

So, here is the question. Since the new injectors come with calibration/characterization data, wouldn't this data give the ECU what it needs to be able to use the new injectors, without necessitating a re-tune?

Tampa Tuning · 07-01-2015, 09:54 AM

No,
Your ECM will need to be scaled with the proper injector data

Batmanntexas · 07-01-2015, 11:44 AM

Isn't the proper injector data usually included with the injectors (FAST, Siemens DEKA, etc.)?

MA2010SS · 07-01-2015, 01:46 PM

Like Tampa said your ECW will need to be scaled with the correct data for the injectors

LS7 427 · 07-02-2015, 08:35 AM

Quote:

Originally Posted by Batmanntexas

Isn't the proper injector data usually included with the injectors (FAST, Siemens DEKA, etc.)?

What they are telling you is that the calibration data will have to be loaded by the tuner into the tables and then the tune loaded into the car. The same will probably be true for the new fuel system.

JANNETTYRACING · 07-02-2015, 01:27 PM

Quote:

Originally Posted by LS7 427

What they are telling you is that the calibration data will have to be loaded by the tuner into the tables and then the tune loaded into the car. The same will probably be true for the new fuel system.

This

AITI · 07-02-2015, 01:32 PM

Correct. There is a good excel spreadsheet online somewhere for guidance, but always have to re-scale.

Batmanntexas · 07-03-2015, 11:00 AM

Thanks for the clarification. Perhaps I didn't phrase my original question correctly. I know that the new injector data will have to be uploaded into the tune, then flashed into the ECU. I definitely wasn't aware of the scaling piece. I recently purchased HP Tuners, so that EVENTUALLY I'll be able to handle some of this for my own car, rather than dropping $$ every time a change is made. I respect the amount of skill it takes to properly tune one of these cars, any car for that matter. I'm just trying to figure stuff out while I'm sitting over here in the desert. Got another 8 months to plan out my upgrades for when I get home.

Thanks for the info, fella's.

LS7 427 · 07-03-2015, 09:11 PM

Your welcome. Be safe over there.

enloe · 07-03-2015, 11:03 PM

In theory, you could install the larger injectors and have no issues with no tuning changes other than the data that is necessary to replace in certain tables using HP Tuners. This is assuming the data you are given is accurate.

This is useful to know if you wanted to do the work at home or at your schedule and have you car ready for a complete custom tune to be done at a later time.

Otherwise, it would be less of an effort and safer to install the injectors and any other mods all at once and do a complete dyno tune at the same time. This will insure there are no tuning related issues immediately after you make changes to the car.

I installed my injectors and did an initial tune that consisted of injector data only. I then drove the car around as my daily driver until my tuner expert was available to address the other tuning needs I had. All went well because i was lucky to have good data for the injectors. I have read that not all injectors have the same quality of data and you should do some research. Read up on HP Tuners forum website.

Also, there are some really nice companies here that provide tuning files for the parts they sell. I realized this after buying a bunch of parts. You could benifit from buying from one of them that include tuning support...getting a tune to match you parts at the same time. I think Jannety is one of them.

Batmanntexas · 07-04-2015, 03:14 AM

@enloe - Thanks for the info and recommendations, I appreciate it.

07-01-2015, 08:20 AM	#1
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,372 View My Garage	New injectors....To Tune or Not to tune... Ok, I'm definitely a novice with all of this tuning stuff. I'm getting ready to turn up the wick on the Whipple, and as such, am going with larger injectors, multiple fuel pumps, etc. So, here is the question. Since the new injectors come with calibration/characterization data, wouldn't this data give the ECU what it needs to be able to use the new injectors, without necessitating a re-tune? __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14

07-01-2015, 11:44 AM	#3
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,372 View My Garage	Isn't the proper injector data usually included with the injectors (FAST, Siemens DEKA, etc.)? __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14

07-01-2015, 01:46 PM	#4
MA2010SS Drives: 2010 Camaro SS Join Date: Aug 2010 Location: Somerset MA Posts: 725 View My Garage	Like Tampa said your ECW will need to be scaled with the correct data for the injectors __________________ 2010 Camaro SS Whipple SC, CAI Inc Intake, TSP 1 7/8" LT headers no cats, 3" magnaflow exhaust, HPT, RX Catch Can, LSR Toe Rods, LSR Trailing Arms, ALKY Control Meth, McLeod RXT Twin Disc, ZL1 fuel pump, 3.73 ZL1 Differential Kit, BTR PDS Stage 2 Cam, Tuned by SLOWHAWK Performance Bridgewater MA

07-03-2015, 11:00 AM	#8
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,372 View My Garage	Thanks for the clarification. Perhaps I didn't phrase my original question correctly. I know that the new injector data will have to be uploaded into the tune, then flashed into the ECU. I definitely wasn't aware of the scaling piece. I recently purchased HP Tuners, so that EVENTUALLY I'll be able to handle some of this for my own car, rather than dropping $$ every time a change is made. I respect the amount of skill it takes to properly tune one of these cars, any car for that matter. I'm just trying to figure stuff out while I'm sitting over here in the desert. Got another 8 months to plan out my upgrades for when I get home. Thanks for the info, fella's. __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14

07-03-2015, 09:11 PM	#9
LS7 427 10.11 @ 136.32 Drives: Black & Yellow 2SS/RS LPE LS7 427 Join Date: Mar 2010 Location: Redcliff, Alberta Posts: 957 View My Garage	Your welcome. Be safe over there. __________________ My Build Journal Built, Tuned and Maintained By........

07-01-2015, 09:54 AM	#2
Tampa Tuning Account Suspended Drives: TAMPA TUNING FACEBOOK & INSTAGRAM Join Date: Oct 2010 Location: Tampa, Fl Posts: 3,044	No, Your ECM will need to be scaled with the proper injector data

07-02-2015, 01:32 PM	#7
AITI Account Suspended Drives: 2015 LFX Auto Join Date: Apr 2015 Location: US of A Posts: 280	Correct. There is a good excel spreadsheet online somewhere for guidance, but always have to re-scale.

07-03-2015, 11:03 PM	#10
enloe Drives: 2015 ZL1 Camaro Join Date: Jun 2015 Location: Arizona Posts: 24	In theory, you could install the larger injectors and have no issues with no tuning changes other than the data that is necessary to replace in certain tables using HP Tuners. This is assuming the data you are given is accurate. This is useful to know if you wanted to do the work at home or at your schedule and have you car ready for a complete custom tune to be done at a later time. Otherwise, it would be less of an effort and safer to install the injectors and any other mods all at once and do a complete dyno tune at the same time. This will insure there are no tuning related issues immediately after you make changes to the car. I installed my injectors and did an initial tune that consisted of injector data only. I then drove the car around as my daily driver until my tuner expert was available to address the other tuning needs I had. All went well because i was lucky to have good data for the injectors. I have read that not all injectors have the same quality of data and you should do some research. Read up on HP Tuners forum website. Also, there are some really nice companies here that provide tuning files for the parts they sell. I realized this after buying a bunch of parts. You could benifit from buying from one of them that include tuning support...getting a tune to match you parts at the same time. I think Jannety is one of them.

07-04-2015, 03:14 AM	#11
Batmanntexas Drives: 2012 Camaro SS (2SS) Join Date: Aug 2012 Location: Stafford, VA Posts: 1,372 View My Garage	@enloe - Thanks for the info and recommendations, I appreciate it. __________________ 745RWHP/634RWTQ on 93 @ 10psi 806/676 on E85 @ 10psi COTW 9/8/14