I heard someone talking about it just wasnt sure what the hell it is lol

 

no one makes a set of upgraded fuel injectors for our cars. so they make a 5th fuel injector. i guess its just a lil boost of extra fuel pressure maybe? not 100% sure.

 

Our factory fuel system can't supply enough fuel for large turbo upgrades or E85 on even a stock turbo, because the high pressure fuel pump (mechanical pump on the front of the motor) doesn't have enough output. It is also true that there are no upgraded injectors for our cars. To supply this needed extra fuel, ZZP has come up with a fuel injector setup that mount on the front of your intake manifold and sprays fuel into the intake manifold. It's controlled by a piggy-back control unit. The fuel actually travels the more normal route, past the intake valves. I don't know if you're familiar with Grand National modding, but there is a similar kit for those.

Some argue that the fuel doesn't get dispersed evenly to each cylinder. I don't give a crap, honestly, because I never intend to make enough power to need it.

 

oh okay that makes since then!

 

ZZPerformance - LNF5 Fifth Injector Controller #ZZ-LNF5-INJC

 

Or make your own 5th Injector DIY instructions - Saturn Sky Forums: Saturn Sky Forum

 

So.. Instead of designing larger injectors and an upgraded pump, ZZP decided to make an overpriced, janky kit for adding an injector? What the frack?

 

That's been looked at before and it is unfeasible.

Feel free to piece together your own kit or drill in the casted IM though.

 

Because designing and manufacturing injectors would be a profitable piece of cake.

 

Psshhh.. my IM is plastic, and multiple companies make bigger injectors for CSRT and I believe the stock fuel pump is good at 450+ hp

It must be, plenty of other cars have many options for injectors. I'm no DI expert, but there's no universal option with spacers and a pnp harness or anything? F that.. I know the MS3 is DI and has several options for replacement pumps or pump internals.

 

Just stop

 

the ms3 NEEDS to be upgraded as far as fuel injection goes cuz it cant handle any power over stock. one of my best friends has a ms3 and as soon as he put a intake and exhaust on it, his fuel pump needed upgraded cuz it couldnt supply enough fuel to the engine.

 

What is it that you don't like about our kit? At the moment, the 5 highest hp lnfs in existense are all running our 5th injector kit. I ran 10.99 and trapped over 137mph with our kit. CMiller ran 10.89 with our 5th injector kit and a mail order tune. It can't be as bad as you are making it sound, can it?

 

I'm not saying it's wrong, just confusing to me that a 5th injector would be add to the IM for $500 when you could buy a decent set of injectors and a fuel pump for near the same price. My gf just bought a MS3, and I began reading on their forums that you need new fuel pumps and this and that once you start modding.. it's just different to me, that's all. I had a Solstice GXP, which also had the lnf in it, before the caliber. It wasn't heavily modded by any means, but I had no problems holding fuel pressure at 19 lbs of boost and 320 rwhp on stock pump and injectors.

 

Lol, at only 320 whp you wouldn't. This is for the E85 guys making 400whp+.

 

Understandable, but why not bigger injectors and a fuel pump?

 

We sell a cam with larger pump lobe to increase the output of the high pressure pump by about 20%. We also sell the Aeromotive Stealth in-tank pump that can support over 600whp on E85. The 5th injector can be run with both of those mods for guys pushing 450+ on E85. Adding a larger high pressure pump would cost a lot more than the 5th injector kit, and it also adds ECM problems because we don't have access to some of the charts needed to re-map the regulator solenoid. Developing new DI injectors is also very costly and would also be needed without a 5th injector. The parts we offer actually get the job done for a relatively low cost compared to other options.

 

Fair enough, I appreciate the enlightenment on the topic. All cars have their quirks.. The CSRT has no lsd, pcm pulling throttle at the torque/boost limit, aerodynamics of a brick, HIDs cause the alternator to deep fry itself..

 

i like the CSRT a lot tho. very nice lookin car.

 

GTFO dude. Its not as easy to make a DI injector. And your fuel pump good to 450? How about stock pump stock injectors making 525whp like we can. How much is a good brand like coolingmist meth injection? 500.00 bucks, that's what the ZZP kit cost.

 

It doesn't sound like he's attacking anything. He's just curious and doesn't know the platform like we do.

 

Then research first lol. I don't go bashing other forums before I know about them. I am a member of many car forums but have never posted but visit everyday to learn more and do research. Comes over here and within 2 post is what I think is bashing the 5th injector.

 

I never intended to bash anybody, so I apologize if that's how it appeared. I was just confused and I learn by asking questions when I don't understand something.

 

No worries. There has been alot of bashing of the fifth injector by professional know it alls so everyone is a bit sensitive of the issue. New injectors r expensive and gm made the lnf sort of a dead platform...

 

Lol. "Professional know it all's" wouldn't bash it if it weren't for the fact it's a garbage design.

The 5th injector is a viable way to help LNF fueling issues. The ZZP kit is a poorly designed and expensive variation of 5th injector setups. A proper setup can be built by just about anyone for cheaper and it WILL work better.

Max dyno numbers mean nothing when talking about this kind of stuff. It can make good power and go fast but still run like cr@p.