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550cc or 630cc injectors

 
Old 02-16-2019, 10:46 AM
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E55 amg w211
550cc or 630cc injectors

hi just wondered what the best setup for injectors would be for my e55 amg

current mods

74mm fixed
mid lenghts
race cats
killer chiller

adding mods

82mm throttle body
looped fuel rail
70mm fixed
water meth

what would be the best suited injectors for the added mods. I understand Iím on the limit with standard ones running a 74mm fixed.
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Old 02-16-2019, 12:03 PM
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not sure you need bigger injectors, who did your tune for the fixed ?
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Old 02-16-2019, 12:39 PM
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E55 amg w211
Car was already running current mods. I think it was eurocharged. Not sure.
People have told me that the stick ones will be maxed out on a 74mm pulley. As I want to go to a 70mm surely I will need bigger ones.
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Old 02-16-2019, 05:24 PM
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2005 E55 AMG, 2017 E400 Wagon, 2018 C350e hybrid
You are indeed reaching the point of needing bigger injectors. I would definitely recommend them before adding mods. 550cc injectors are big enough for well over 800 crank horsepower, which you will never come close to with an E55, so there is no reason to use 630cc (assuming you don't plan on running E85). In addition, since most people go with 550cc, that is what the tuners have the most experience tuning for.
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Old 02-18-2019, 03:16 AM
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E55
Originally Posted by sjc246 View Post
You are indeed reaching the point of needing bigger injectors. I would definitely recommend them before adding mods. 550cc injectors are big enough for well over 800 crank horsepower, which you will never come close to with an E55, so there is no reason to use 630cc (assuming you don't plan on running E85). In addition, since most people go with 550cc, that is what the tuners have the most experience tuning for.
I have maxed out a set of 630cc injectors at 600whp. Still have room to go more. No idea where 800hp and 550cc come from. All engines have different VE - what works for one, wonít work for the other.

OP, there is no such thing as injector too big. But you need to speak to your tuner as he would have to map for that.
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Old 02-18-2019, 03:33 PM
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1998 c230, 2016 e350, 2006 E55, 2016 BMW I3, 2005 e55, 1998 e320 wagon, 2005 clk320
630 for sure, thats a pretty heavy set up
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