Huge list of go-FAST new mods goin on, need some help on Fuel Injectors
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V12-Biturbo
Huge list of go-FAST new mods goin on, need some help on Fuel Injectors
l Need some more info on what Fuel injector Size & brand (Five-O uses modified Bosch INJ) IE 550cc according to Five-O Motorsports is Stock for E55 AMG 
& Jody told me he used them on his V12 biturbo swap? Wouldnt I need 650cc or larger? ANY help greatly apreciated
(car in question SL600 v12 biturbo) Came here to ask since all REAL gear heads live here...
These NEW mods are quite substantial & should put me very close to 800+ odd rwhp on dedicated Q16 or & E85 files. Full list & pix to follow. Jeremy is re-dyno tuning after ALL new mods, his handheld tuner is capable of storing (10) different tunes.
PS my Tech is fully adept @ removing notorious s_hit ABC hydraulic suspension & replacing w/coilovers, is it worth it? IE ride quality not too harsh it'll remove a good amount of weight & future ABC repairs thought?
Help is greatly appreciated
& Jody told me he used them on his V12 biturbo swap? Wouldnt I need 650cc or larger? ANY help greatly apreciated (car in question SL600 v12 biturbo) Came here to ask since all REAL gear heads live here... These NEW mods are quite substantial & should put me very close to 800+ odd rwhp on dedicated Q16 or & E85 files. Full list & pix to follow. Jeremy is re-dyno tuning after ALL new mods, his handheld tuner is capable of storing (10) different tunes.
PS my Tech is fully adept @ removing notorious s_hit ABC hydraulic suspension & replacing w/coilovers, is it worth it? IE ride quality not too harsh it'll remove a good amount of weight & future ABC repairs thought?
Help is greatly appreciated
Last edited by Thericker; Jan 5, 2013 at 03:50 AM.
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From: Atlanta, GA
E55 AMG on Ethanol-Meth; 600rwhp BMW M5
We run 1000cc injectors in my e85 e55 along with dual 340lph pumps. It took a decent amount of tuning on the dyno and the street, but the car is very close to stock in how smooth it is. It is the fiveomotorsport red injectors too, and the only quirk that gives away it has massive injectors, is at idle it will hunt 100rpms every 10-12 seconds. They are somewhat loud too, you can hear them ticking away, but I love it. My numbers are no where near what you are going for, put down 594/708 on a local dyno jet.
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2005 E55 AMG
We run 1000cc injectors in my e85 e55 along with dual 340lph pumps. It took a decent amount of tuning on the dyno and the street, but the car is very close to stock in how smooth it is. It is the fiveomotorsport red injectors too, and the only quirk that gives away it has massive injectors, is at idle it will hunt 100rpms every 10-12 seconds. They are somewhat loud too, you can hear them ticking away, but I love it. My numbers are no where near what you are going for, put down 594/708 on a local dyno jet.
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05 White Pano E55, Cadillac CTS-V
Like mentioned above, he isn't talking about an E55 so the injector size will be completely different (don't need as big), since he will have an extra 4 injectors fueling is 800whp goal.
I personally would get a set of the Bosch EV14 725cc injectors or Injector Dynamics 725cc injectors which are essentially the same thing. Just make sure you know the injector length because you may need the aluminum extensions or you may not (they come in like 3 different lengths). Then also the injector harness pigtails or little conversion clips (like 1" long) from one electrical connector plug in type to another, whichever of the two will work for you (E55 is tight fitting the 1" plastic converters between injector and rail so some use the pigtails).
I personally would get a set of the Bosch EV14 725cc injectors or Injector Dynamics 725cc injectors which are essentially the same thing. Just make sure you know the injector length because you may need the aluminum extensions or you may not (they come in like 3 different lengths). Then also the injector harness pigtails or little conversion clips (like 1" long) from one electrical connector plug in type to another, whichever of the two will work for you (E55 is tight fitting the 1" plastic converters between injector and rail so some use the pigtails).
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Dirt Scooters
I've got injector dynamics 1000's for my build but I went ahead and got a set of 725's also incase the 1000's were too big. I didn't like the five-o red injectors when I had them and they are really loud too. With you having a v12 and only looking for 800hp I would get the 550cc or if you might step it up in the future or run E85 then I would go with the 725 injector dynamics. On another note what kind of IAT's do you see? Q16 might not be the best for you. I've had a lot of talks with my builder and another builder that builds/tunes big inch supercharged engines and they said stay away from Q16 if your IAT's are over 120-130. I talked to the VP rep and regional manager and was told the same. It evaporates very quickly and has a ton of lead in it.
Last edited by e55amgrocket; Jan 5, 2013 at 10:07 AM.
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1990 300ce supercharged and intercooled
750 on E85 is to small unless you are running a lot of fuel pressure. I know the E55 runs higher fuel pressure but I do not remember what the v12 is running. I do know that I have 750cc injectors at 60psi and they will not flow enough for E85 on 6cylinders and a little North of 500ckhp. I would suggest going with the ID1000. You know you will have enough room and they idle fine.
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From: Atlanta, GA
E55 AMG on Ethanol-Meth; 600rwhp BMW M5
Fuel pressure will also depend on fuel line size. We decided on using stock lines but big pumps and injectors along with the looped rail. Fuel pressure was perfect for the e55 application.
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From: Puerto Rico
2005 E55 AMG
750 on E85 is to small unless you are running a lot of fuel pressure. I know the E55 runs higher fuel pressure but I do not remember what the v12 is running. I do know that I have 750cc injectors at 60psi and they will not flow enough for E85 on 6cylinders and a little North of 500ckhp. I would suggest going with the ID1000. You know you will have enough room and they idle fine.
It cannot be compared to E55's running only 8 injectors. I personally do not like running overly large injectors either since they will affect idle quality.
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From: seattle
1990 300ce supercharged and intercooled
The problem I run into with most of the calculators out there is that they assume a fairly low rpm limit. Yeah 750cc injectors will flow up to 4500 rpm maybe 5k at 43.7psi but not 7,000 rpm. You run out of injector quick with another 1000rpm or 2. Now there is some margin at 80-90 psi but All engines are different and the bsfc of E85 is a little rough at best. I have seen from .90 to a little over 1 stated. I would error on a little to big unless I was willing to step up if they are to small. And ID1000's idle fine if setup properly in the tune. The new injectors are just amazing compared to the older stuff. The min/dc on these are very low due to the response time and the balance. Hell I have some old low/ohm Rochesters that idle smooth at 650rpm on pump gas. Add some pulse/width for the E85 and they are well above margin for min/dc.
Just my $0.02.
Just my $0.02.
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From: Northern Va
Dirt Scooters
The problem I run into with most of the calculators out there is that they assume a fairly low rpm limit. Yeah 750cc injectors will flow up to 4500 rpm maybe 5k at 43.7psi but not 7,000 rpm. You run out of injector quick with another 1000rpm or 2. Now there is some margin at 80-90 psi but All engines are different and the bsfc of E85 is a little rough at best. I have seen from .90 to a little over 1 stated. I would error on a little to big unless I was willing to step up if they are to small. And ID1000's idle fine if setup properly in the tune. The new injectors are just amazing compared to the older stuff. The min/dc on these are very low due to the response time and the balance. Hell I have some old low/ohm Rochesters that idle smooth at 650rpm on pump gas. Add some pulse/width for the E85 and they are well above margin for min/dc.
Just my $0.02.
Just my $0.02.
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From: Southern, CA.
V12-Biturbo
Excellent info/help thank you all very much (I did ask Marcin-Speedriven NO response, I also asked s few other tuners & they wern't sure & told me to do my own research) Lastly the V12 biturbos 600/65's redline @ 5700 rpm's ONLY SL65 Black Series has been bumped up slightly @ 6k rpm's vs your Supercharged V8's
Again thank you ALL very much for the time/info!!
Again thank you ALL very much for the time/info!!
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From: Puerto Rico
2005 E55 AMG
I'm a bit old school when it comes to injectors so if modern 1000cc injectors can atomize fine at idle then by all means get them. Idle is the biggest issue you have with larger injectors.
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V12-Biturbo
Last Question I'm goin for the 750cc INJ though Five-0 doesn't list ANYTHING for the m275 V12tt motors? Where else can I buy them (I'd rather buy a brand that was top notch & not modified Bosch INJ like 5-O sells) any links/sites where I can source these 750cc's made specifically for my V12? Again thnku very much!
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Dirt Scooters
Last Question I'm goin for the 750cc INJ though Five-0 doesn't list ANYTHING for the m275 V12tt motors? Where else can I buy them (I'd rather buy a brand that was top notch & not modified Bosch INJ like 5-O sells) any links/sites where I can source these 750cc's made specifically for my V12? Again thnku very much!
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V12-Biturbo
Perfect I'm on it!
Trust me. Go with injector dynamics and you will be happy. You can find a distributor on their website or look on ebay and email them about getting some. The 725's will be plenty for what your goals are. They aren't the cheapest but well worth it. You will need just the standard injectors with no adapters also so you might be able to get them a little cheaper. I paid $920 shipped for the 1000's and $700 for the 725's from a guy that bought them and Didnt use them.
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From: Southern, CA.
V12-Biturbo
Hmm looks like the plans have changed, finally found a local fabricator who has done lots of turbo swaps/work 1-off Manifolds & GTX3076R's have been purchased & rated @ 630 HP per side we'll soon see what's what.. Speedriven or OE tuning will tune her..
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E55
Typically you want to double your fuel requirements when running methanol, alchy, or e85. Ive built cars with e85 before, sure its cheaper but they like to guzzle it down like a 40 oz. You will be going to the pump more frequently. Especially if you're the lead foot I know you are Sean! :-P
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Dirt Scooters
What size A/R? Make sure you do your homework and double check it. I can give you the guys number that I work with on turbo's a lot if you want to get another opinion on it. He can also do a lot of custom work on the turbo to fit your needs and most of all will tell you what you need for your goals. The v12's don't turn much RPM's so that's going to make a difference
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Audi A4
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V12-Biturbo
What size A/R? Make sure you do your homework and double check it. I can give you the guys number that I work with on turbo's a lot if you want to get another opinion on it. He can also do a lot of custom work on the turbo to fit your needs and most of all will tell you what you need for your goals. The v12's don't turn much RPM's so that's going to make a difference
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