Making my game plan for new turbo setup. Input welcome!
Well after talking about getting a new turbo and all the support mods the time has finally came and I figured I would post my plan here so I could get suggestions from fellow members so I can be sure I am making the right choice.
Here is a list of parts I am going with,
AMS 50 Trim Turbo
AMS FMIC (Street Core)
AMS UICP
AMS Fuel Rail
780cc Injectors ----- Suggestions on which company...???
Perrin water injection system
Head Studs ----- Suggestions on which company...???
GSC Stage 2 Cams
Exedy Twin HD Cerametallic clutch.
This should be interesting since no one in the Rocky Mountain region is running this turbo yet that I am aware of. I am looking to run around 25-26 pounds of boost with Meth/Alky injection.
Like I said if anyone has any input in this please do as I want to make this project as successful and as "complete" as possible to insure I am not taking the wrong path.
Also Justin I need to get with you on making a plan for installs and tuning! I had met you at the meeting sunday through Clayton.
- Consider a larger FMIC than the street core
- Head studs = ARP
- Be sure that's a Perrin ALKY or METH injection system - you won't be doing water injection
- Use whatever injectors AMS sells and/or recommends. Also, consider 880s
- Don't need the fuel rail - another local Evo runs 1000cc injectors on his Apexi RX6 turbo on the stock fuel rail. I know, because I helped him install the injectors in the parking lot, hah.
No fuel rail? Sounds great to me just another $200 to save and put else where so thank you! And 880's just in case I decide to run race gas correct? Yes I am going with meth/ alky injection that was just a poor choice of description. Suggestions on a good bov? I know the stocker is out due to the new intake tube and uicp.
Forge RS, but not because the stocker is out. Even a new intake/uicp should accommodate the normal routing of our BOV, otherwise you'd have to run VTA, and that's not right.
- Don't need the fuel rail - another local Evo runs 1000cc injectors on his Apexi RX6 turbo on the stock fuel rail. I know, because I helped him install the injectors in the parking lot, hah.
I'm gonna interject on this suggestion. This is a crap shoot when running injectors 880cc and above only because you could run into "injector pulse." With the 780cc and below, you shouldn't need the rail.
I don't consider it a crap shoot. Many, many Evos run 880s and 1000s with the stock rail, but you do have to tune it properly and be aware of any potential issues.
I don't consider it a crap shoot. Many, many Evos run 880s and 1000s with the stock rail, but you do have to tune it properly and be aware of any potential issues.
For the guys that do run the stock rail, they are also probably using injectors far bigger than they need to be and scaling them down low as well. Essentially, the only reasons they have the size injectors they do is in case they want to go with a more horsepower producing motor setup than they currently have or because they want to have that extra insurance of having enough fuel on demand, which is where you were going with your initial suggestion (I think.). A friend of mine is using 1600cc injectors (which absolutely requires a fuel rail) for this very reason.
Injector pulse really becomes an issue on the stock rail when hitting the higher duty cycles on large injectors. Essentially, when your trying to use lager injectors to their full potential depending on what you're trying to accomplish, the stock rail creates a "bottleneck" which slows down the amount of fuel being delivered to all the injectors and thus causing the "pulse."
Make no mistake, the stock fuel lines can support ample fuel demands. So too can the rail and fpr. What I'm trying to say is that by my preference, If I were considering using injectors in the 800cc+ territory, this is why I'd swap the fuel rail.
Other than that, I see no problem with the setup suggestions so far. Should be a fun setup.
You are probably right in most cases, but the one example I gave was a pretty large Apexi turbo, and he's making 450whp up here on the Dyno Dynamics at RP in the Springs. I made 300whp on that same dyno, and he has trapped 120+ at PMI. That's GT35R range almost when you consider the altitude...
You're buying from AMS, who has LOADS of evo building experience. Ask them what they recommend and why. You also already have mine and Warrtalon's info to suport your decision as well.
Right and thats why instead of asking "AMS" what they think I should run as far as products I ask you guys because of course someone is going to support their own products.
I'm gonna interject on this suggestion. This is a crap shoot when running injectors 880cc and above only because you could run into "injector pulse." With the 780cc and below, you shouldn't need the rail.
I have been running 1000's for a couple years now on the stock fuel rail with no problems.
Keith
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EVO 11.53 @ 123.37, Black WRX Wagon 13.62 @ 99.24
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