Running 270cc injectors on a DE with alcohol injection at 8 psi, safe?

[S13xCrazy]

I was wondering if its possible to safely run 270cc injectors with alcohol injection at around 8 psi on a GT28?

I have read the debate about 270cc injectors on a turbo setup, and some say yes some say no at the same time.

But would it be safe enough with alcohol/water injection to boost no problem?

I do plan on getting my ECU tune setup for this through E-Mance.

Thanks,Tony

[Zippy69]

270's won't flow enough fuel on their own. Alcohol will allow more timing, but it won't help with fuel, only detonation. You will either need larger injectors or run an fmu with your stockers.If your going with an emance tune, then just pick up some 370cc's from an sr.

[neverlift]

an fmu would be needed OR you could run a fpr and romtune that will let you increase fuel pressure... either way you will need a walbro.

[480sx]

I mean if your already going to get an ECU tune, why not drop the extra 100 bucks and get a set of used SR injectors to make sure your in a safe range?

You would be at the max duty cycle of those injectors with that turbo @ 8 psi. Bad place to be, even the cold air could pop your engine.

[WDRacing]

270's won't flow enough fuel on their own. Alcohol will allow more timing, but it won't help with fuel, only detonation. You will either need larger injectors or run an fmu with your stockers.If your going with an emance tune, then just pick up some 370cc's from an sr.

Incorrect.

Alcohol can be used a fuel source as well as a means to avoid detonation. However, you'll go through alot of alcohol if it's to be used daily. I suggest alcohol as a source for running more boost at the track or similar situations. The money you spend in alcohol will be more then some used 370's and the Rom tune in under 3 months. I wrote an article on Alcohol Injection not long ago, Go here to read it.

The FMU is an excellent way to run 8 psi or so on stock injectors. However, at 8psi I'd recommend retarding your base timing by 2-3 degree's just for a safety margin. The FMU should be a 8:1 ratio.

WD

[S13xCrazy]

To begin, the only reason i ask is because i got 370cc injectors from PopPop but im not 100% sure if they are actually 370cc, so I'm trying to get a backup plan here.

Yeah, i read that article. Its a great resource/read!

Ever since then i have decided ill go ahead and run alcohol injection, but I still have a few question on it.

What size injector should i use for 8-15psi?What tuning would exactly be needed? Anything really?

Thanks guys!Tony

[Zippy69]

Incorrect.

Alcohol can be used a fuel source as well as a means to avoid detonation. However, you'll go through alot of alcohol if it's to be used daily. I suggest alcohol as a source for running more boost at the track or similar situations. The money you spend in alcohol will be more then some used 370's and the Rom tune in under 3 months. I wrote an article on Alcohol Injection not long ago, Go here to read it.

The FMU is an excellent way to run 8 psi or so on stock injectors. However, at 8psi I'd recommend retarding your base timing by 2-3 degree's just for a safety margin. The FMU should be a 8:1 ratio.

WD

I assumed, and still do, that he was talking about an alcohol injection set up used for cooling the charge, not as a fuel source for the reason you stated of the cost of running an engine on alcohol.

OP, don't you deal with Jason? He should be able to help you set your car up. Get you some 550ccc deastwerks, and tell Jason everything in your set up, and he will tune for it.

[S13xCrazy]

I assumed, and still do, that he was talking about an alcohol injection set up used for cooling the charge, not as a fuel source for the reason you stated of the cost of running an engine on alcohol.

OP, don't you deal with Jason? He should be able to help you set your car up. Get you some 550ccc deastwerks, and tell Jason everything in your set up, and he will tune for it.

nope, i plan on using it for a wee bit for fuel source also. This is no daily driver, instead its a weekend warrior

I'm 99% sure i have 370cc injectors, so i should be good to go. Ill have Jason send me a new tune soon though, I'm just looking for some more info, because maybe i can tune it out on an SAFC?

[240sxvaj]

I say go bigger such as 450cc dwerk. i was thinking of 370cc at first but found out that wasnt enough for me and decided to go 450cc and just got it tune with t25. perfect for daily driver and makes good power.