Injector choice for 03 cobra

[Brad D]

Looking for some direction for an injector choice for my build. Goal is 700-800 WHP on E85 for my 03 cobra build. I just got done building the motor. Teksid block fully studded with diamond 9:6:1 pistons .02 over, Factory rotting assembly with upgraded arp 2000 bolts. boundary 3v oil pump with billet gears, king main and rod bearings, reworked 9 thread heads/valves. multi angle valve job with bronze valve guides and higher seat pressure springs with 98 cobra cams. Vmp Gen3r with a 2.8 upper stock caged lower. Fore lvl2 return system with dual 465s. Will be on E85 and the stock computer. Any input is appreciated thank you.

 

[cobracide]

80#

 

[blownfox]

I would ask your tuner what he recommends.

 

[01yellercobra]

ID1050X's seem pretty popular. But the FIC's are catching on too. I've used both and I think they're decent. But I'm no pro by any means. Though for 800 I think you'd want the 1300's for a little head room. It seems hit or miss on the 1050's being enough around there.

 

[03' White Snake]

ID1050X's seem pretty popular. But the FIC's are catching on too. I've used both and I think they're decent. But I'm no pro by any means. Though for 800 I think you'd want the 1300's for a little head room. It seems hit or miss on the 1050's being enough around there.

I run 1050X's on E85. I make 822 hp on 22 psi. My base fuel pressure is set to 40 lbs. I was making 785 hp on 80's but had to have my base pressure at 58 to keep the injectors going. So definitely go at least 1050's if not bigger.

OP, I have a similar build with slightly higher CR, custom Cams etc.

 

[Zemedici]

Ask your tuner. Every tuner has brand preferences due to flow data, partnerships, etc etc etc.

 

[jwcobra03]

ID1300X if you want some headroom. 1050X will be cutting it close on the upper end of your goals.

 

[01yellercobra]

I run 1050X's on E85. I make 822 hp on 22 psi. My base fuel pressure is set to 40 lbs. I was making 785 hp on 80's but had to have my base pressure at 58 to keep the injectors going. So definitely go at least 1050's if not bigger.

OP, I have a similar build with slightly higher CR, custom Cams etc.

That's why I said hit or miss. Some seem fine while others are reaching the limits. It would be interesting to figure out why that is.

 

[Zemedici]

That's why I said hit or miss. Some seem fine while others are reaching the limits. It would be interesting to figure out why that is.

Depends on what pumps too

 

[01yellercobra]

Depends on what pumps too

I guess I wasn't thinking about some might be raising the base pressure. I guess that would be another variable to think about.

All I know is if I ever go big I'll go with the Bosch 220's and call it a day.

 

[beefcake]

you can't go wrong with either injector, we run both data is good on both

 

[Brad D]

Thanks a lot guys for the response, this is exactly what I was looking for, some real world experience. I don’t really want to go more than 800. I’m sure I’ll be breaking plenty of stuff even at the number. Now I just need to make my mind up on ID or FIC. Thanks again guys.

 

[Brad D]

ID1300X if you want some headroom. 1050X will be cutting it close on the upper end of your goals.

I run 1050X's on E85. I make 822 hp on 22 psi. My base fuel pressure is set to 40 lbs. I was making 785 hp on 80's but had to have my base pressure at 58 to keep the injectors going. So definitely go at least 1050's if not bigger.

OP, I have a similar build with slightly higher CR, custom Cams etc.

I’m really hoping I can just do the 1050x. Got a quote and the price difference is $650.

 

[Brad D]

you can't go wrong with either injector, we run both data is good on both

Could you quote me for a set of the 1050x?

 

[Brad D]

Depends on what pumps too

I have dual 465’s

 

[03cobra#2]

There is a good chance 1050's would work. However if it was me I would look at ID1300's or FIC1200's to save some money. I'm finishing up my current setup and I'm going with FIC1650's so I can keep a 40 psi base pressure and hopefully max out at like 70% duty cycle.

My last combo I ran FIC 1000's and hit max duty cycle running 58psi base pressure on 25 / 26 lbs of boost on a Whipple3.4. Hope that helps.

 

[Brad D]

I run 1050X's on E85. I make 822 hp on 22 psi. My base fuel pressure is set to 40 lbs. I was making 785 hp on 80's but had to have my base pressure at 58 to keep the injectors going. So definitely go at least 1050's if not bigger.

OP, I have a similar build with slightly higher CR, custom Cams etc.

Hopefully I can atleast hit 750 if I go with the 1050x. My boost will be lower than your. Unless you have long tubes also.

 

[03' White Snake]

Hopefully I can atleast hit 750 if I go with the 1050x. My boost will be lower than your. Unless you have long tubes also.

Quick list of my mods. -5.22 dished pistons, 0.020 over, about 10.3 CR, custom cams, KB 2.8h blower, ported lower, twin 465 pumps, -10 f -8 r lines, 1050X’s, Bassani mids, x and CB.

18 lbs I made 744. Long story short, my bypass was hanging up on the rail and bleeding 6 psi of boost.

Before I went 1050’s, I made 785 on 80’s with a high Base Fuel Pressure. I see no reason you can’t make 750 on the 1050’s.

My buddy’s car made 750 @ 24lbs on 80’s with stock motor but the tuner turned it down, said that was risky and he wasn’t comfortable leaving it like that. Also with a high base pressure.

 

[01yellercobra]

Friend of mine made 740rwhp with ID1050X's and twin 450 pumps. It's a Fore return system and he's on E85. The tuner didn't say he was nearing the top of anything. 40psi base pressure.

I have the same set up and run door to door with him, but I haven't seen a dyno yet.

 

[hatchke]

I'd do the 1050X's if i started back over tbh. I'm on the FRPP 80lbs and while it WORKS, i'm about maxed out on my injectors on E85 and around 700whp. I could have used the extra headroom when I was getting tuned and would have made a bit more power considering where we left the timing.