450cc Injectors

[GalantGreg]

I picked up some 450cc injectors I got of of a 97 GSX I saw in the junk yard today. I also picked up an eprom ecu out of a 94 1g. It was the mother load for me today. Along with those I picked up the exhaust manifold as well. What I really want to know is with my build, http://www.dsmtuners.com/forums/newbie-forum/313216-my-engine-build-pics.html are these injectors enough to support my goal of 300 + hp?

 

[92AWDHX40]

You will need more fuel for that turbo, so do i ill be getting larger ones soon, because im running dsmlink along the way. So get larger injectors.

 

[byebyev8]

you can make about 300chp on 450's. All you need is a 14b at 18psi and a fp rewire. but if your a 1g you should already have a 14b.

 

[GalantGreg]

My new engine will have a 16g. What will be the ideal size.

 

[snowborder714]

550's or 660's should do well.

 

[92AWDHX40]

Thanks wiseman im shooting for 300 horsepower as well.

 

[dsm-onster]

Why did you get 450s? you already have them unless you have an automatic car. If you have an auto turbo, then you have 390cc injectors and higher fuel pressure.

450s are not good enough for a reliable 300+ whp. Some may have even done this and the car remained reliable. But, the key word is some. Reliability is consistancy across the board.

I agree with 550s. You have an eprom. Go for 650s or the largest in the same price range. No reason not to. It is actually more afordable for you to run a 2g maf and reburn your eprom which allows higher than 650cc injectors to be run safely and worry free from timing advance. Not to mention you'll basically have stock-like smooth running and better driveablility. Check out the dsm-ecu yahoo group. ALL the information you need minus this, free tunerpro and an $85 burner with an erasable eprom.

About the maf. Your 1g maf will overrun for such a goal. It's not about how much air it can flow, but how much air it can meter. Mine overran at 31lb/min. Which is not enough for 300whp. It dropped hertz counts, which told my computer there was less air coming in than actually was. It pulled down my injector open time and leaned me out enough to crack ALL 4 of my pistons. Suffice it to say, I run a 2g maf now.

 

[byebyev8]

If you don't want to spend as much evo8 560's (really 580's) flow enough to max out a 16g. Even if you have a evo3 they'd be big enough but i'd suggest 650+ if you plan on going with a bigger turbo in the future.

 

[teamdriven]

You really need bigger ones. My original goal was 300+ hp on stock injectors. I ended up hitting fuel cut constantly, then i started smoking. Come to find out I burnt up the valve stem seals, and fouled plugs. Injectors arent expensive. Id go ahead and get 650's and that way you have support for future modifications and support the 18+ psi the 16g will throw out anyway.

Good look bro.

 

[DSM1G90]

'sides, 450's are the size that comes with stock DSM turbos.