550cc INJECTORS AND HARNESS GROUP BUY
04-17-2015, 10:17 AM
#1
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2003 W211 E55, 2003 W220 S600
550cc INJECTORS AND HARNESS GROUP BUY
I figured I post a group buy for fueling mods. I get a lot of inquires for 550cc injector and harness packages.
8 x 550cc Bosch Injectors
8 x FAST connector harness
Price is 399 plus ship for 5 to 10 confirmed orders.
Post if interested
8 x 550cc Bosch Injectors
8 x FAST connector harness
Price is 399 plus ship for 5 to 10 confirmed orders.
Post if interested
Last edited by shardul; 04-27-2015 at 03:16 PM.
04-17-2015, 12:26 PM
#5
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Hypothetical question related to being efficient (with my time): If one were to do a valve cover gasket job, would it be easier to do these at that moment?
Nvm, injectors look way less involved.
Nvm, injectors look way less involved.
Last edited by mkiv_tdi; 04-17-2015 at 12:38 PM.
04-17-2015, 12:40 PM
#6
Is there any downside to upgrading injectors? I think I read that mpg readings in the dash cluster no longer read accurately?
I'm at 500whp now, and will be upgrading to 180mm crank soon. Maybe should upgrade injectors too? Did Renntech do injectors with their packages? I don't remember seeing injectors with their 180 crank and 82mm throttle body packages.
I'm at 500whp now, and will be upgrading to 180mm crank soon. Maybe should upgrade injectors too? Did Renntech do injectors with their packages? I don't remember seeing injectors with their 180 crank and 82mm throttle body packages.
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04-18-2015, 02:47 AM
#11
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How so? Unless you drive the car harder it shouldn't matter. From my experience with my old car I went from 350cc to 1000cc and economy increased at hwy speeds (along with several other mods at the same time). Injectors should only squirt the fuel required is my understanding.
04-18-2015, 12:45 PM
#12
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bone stock E55 AMG
How so? Unless you drive the car harder it shouldn't matter. From my experience with my old car I went from 350cc to 1000cc and economy increased at hwy speeds (along with several other mods at the same time). Injectors should only squirt the fuel required is my understanding.
04-18-2015, 06:47 PM
#13
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05 E55, 07 ML500
Probably not.. If you dyno 500+ on a mustang or DD then probably yes.. Add a 82 tb and I would definitely go to 550's.. Look at my mods, when I did my 82tb I did the 550's and looped rail at the same time.. Just my 02....
04-18-2015, 07:09 PM
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'99 ML320, '06 E55
Any driveability issues with the throttle body? I remember guys had a ruffer idle when they were first starting to install this mod. Did you notice the powere difference after?
04-18-2015, 10:31 PM
#15
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One puts in bigger injectors to add more fuel and keep AFR safer at higher boost levels (otherwise why put in bigger injectors?) .. more fuel = less MPG. It is possible to get increased MPG at cruising speeds if the tune is set to being leaner over stock but in general if you have more power you will want to use it (i.e drive harder as you said 
).
The only possible downside to adding larger injectors is a rougher idle although I have not seen this yet myself in any of the cars I have upgraded injectors on.
Whatever the case, a tune would be mandatory.
These injectors are cheap at $50 a piece, wow! Are these flow matched by chance?
).The only possible downside to adding larger injectors is a rougher idle although I have not seen this yet myself in any of the cars I have upgraded injectors on.
Whatever the case, a tune would be mandatory.
These injectors are cheap at $50 a piece, wow! Are these flow matched by chance?
How so? Unless you drive the car harder it shouldn't matter. From my experience with my old car I went from 350cc to 1000cc and economy increased at hwy speeds (along with several other mods at the same time). Injectors should only squirt the fuel required is my understanding.
04-19-2015, 02:36 AM
#16
Senior Member
Yeah, the injectors were also done with a dump pipe and turbo actuator. So combo of a few things. With the Ford I had, car wouldn't run without stock injectors (needed a tune to run).
I would agree that without a tune, if you had larger injectors the car would get worse mpg, as it is spraying more fuel (literally) thinking it has the smaller injectors.
I would agree that without a tune, if you had larger injectors the car would get worse mpg, as it is spraying more fuel (literally) thinking it has the smaller injectors.
04-19-2015, 10:07 AM
#18
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Two more questions regarding the bigger injectors.
1. Is a looped rail still a necessity with larger injectors
2. Can the stock fuel pump deliver the extra fuel that might be called for by the larger injectors?
1. Is a looped rail still a necessity with larger injectors
2. Can the stock fuel pump deliver the extra fuel that might be called for by the larger injectors?
04-19-2015, 02:14 PM
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05 E55, 07 ML500
Idle is fine, you really notice the throttle response on the freeway, especially since I have long tubes.. My last race, (in Mexico of course) against a "brand new" R8 V10 fome 65 to 165 I pulled on him by 6-7 lengths.. Nice guy but all he could do is shake his heads in disbelief as he just spent aprrox 180k on his car..
04-20-2015, 09:30 AM
#20
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None.. I had it dyno tuned by Jerry after this install.. Car made 566whp on a mustang Idle is fine, you really notice the throttle response on the freeway, especially since I have long tubes.. My last race, (in Mexico of course) against a "brand new" R8 V10 fome 65 to 165 I pulled on him by 6-7 lengths.. Nice guy but all he could do is shake his heads in disbelief as he just spent aprrox 180k on his car..
Idle is fine, you really notice the throttle response on the freeway, especially since I have long tubes.. My last race, (in Mexico of course) against a "brand new" R8 V10 fome 65 to 165 I pulled on him by 6-7 lengths.. Nice guy but all he could do is shake his heads in disbelief as he just spent aprrox 180k on his car..
04-21-2015, 12:36 PM
#22
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aren't there 550cc injectors that fit without a adapter harness?
what brand injectors are these?
what brand injectors are these?
Last edited by m3j0n; 04-21-2015 at 12:40 PM.
04-21-2015, 12:51 PM
#23
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2003 W211 E55, 2003 W220 S600
bosch
the one that fit with out the harness are red in color. reason we dont use those is because they dont have a groove to fasten them to the fuel rail like the OEM ones.
the one that fit with out the harness are red in color. reason we dont use those is because they dont have a groove to fasten them to the fuel rail like the OEM ones.
04-21-2015, 02:05 PM
#24
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