[toohighpsi]

Originally Posted by Joe's_cool_1le

I was just checking a few places on prices for the "Lingenfelter Big Bore HPDI pump" and that thing was 1500 bucks and 500 per injector!!! My god man, that will lighten the pocket for sure. And that doesn't even include the one in the tank? Unless I'm missing something my build just got a lot longer to complete.

The Big Bore pump (1500) and LT4 injectors (80?) are a really nice match.
The LT4 pump will run out of flow before you hit the limit of the LT4 injectors.

[RedRacer Video]

We're running the LT4 Pumps with LT1 injectors on my car. It also has straight meth injection. Should be able to report back with numbers very soon, if not tomorrow.

[JANNETTYRACING]

Originally Posted by USAFS197

So to make sure I'm tracking this correctly, mid-high 500's is still the ceiling for someone on pump gas, regardless of the means of delivery? E85 is not an option and this is my daily driver. Me thinks meth is also not very prudent.

Correct it can be traced directly to fuel flow in lbs of fuel per hour, the limit seems to be right at 325 lb. per hour or 650 crank hp on the stock HPFP(rough est.)

[JANNETTYRACING]

Originally Posted by toohighpsi

The Big Bore pump (1500) and LT4 injectors (80?) are a really nice match.
The LT4 pump will run out of flow before you hit the limit of the LT4 injectors.

We may need to get one of those.

[toohighpsi]

Originally Posted by EDFHOBBIES

No E85 experience?

Would like to do the same thing on E85 minus the meth hassle and worries!

Will go to E85 with the next fueling system upgrades and new short-block later this year.
I'm not a fan of meth at all - water injection along with the correct fuel system is where it's at. I'll still run water with E85.

[toohighpsi]

Originally Posted by oneredry

so to further digress on the identical subject, if I added a rotofab (advise on ether wet or dry) with the stock tune from Maggie, what type of HP should I end up with? and what HP rating are you guys ending up with, with the standard Maggie w/Maggie tune/intercooler kits. I apologies if this would consider a thread jack, but maybe to further digress on the above questions.

Rotofab with dry filter is the higher flowing solution and added 11 RWHP on this car, details can be found in the following post:

http://www.camaro6.com/forums/showthread.php?t=476142

I think I also posted a flow comparison between the stock airbox, rotofab wet, and rotofab dry in the forum here somewhere, just can't remember when.

[thescreensavers]

With 550whp with the stock injectors are they maxed out ? Or is it just an injection time problem?

Id like to run a reliable fuel system in case an "event" happens that needs more fuel so knock doesn't happen. Lt4 stuff doesn't seem too expensive to have some overhead of safety

[parish8]

Originally Posted by toohighpsi

The Big Bore pump (1500) and LT4 injectors (80?) are a really nice match.
The LT4 pump will run out of flow before you hit the limit of the LT4 injectors.

is there another source for this pump? every time I call they are backordered. today lingerfilder said june.

[JANNETTYRACING]

Originally Posted by thescreensavers

With 550whp with the stock injectors are they maxed out ? Or is it just an injection time problem?

Id like to run a reliable fuel system in case an "event" happens that needs more fuel so knock doesn't happen. Lt4 stuff doesn't seem too expensive to have some overhead of safety

You only have 6 milliseconds to get your fuel in the cylinder, the size of the injector determines how much fuel you can flow within that time window.

The LT-1 injectors are pretty much maxed out.

Increasing pressure with higher pressure HPFP, More pressure can get more fuel in the cylinder within the time window but only incrementally.

Larger injectors allow you to put more fuel in the cylinder with less opening time.

Ted.

[AbsolutHank]

Would I be able to drive the car with the new LT4 Pump and Injectors on the Magnuson tuning to get it to a dyno? Low speed/RPM of course

[JANNETTYRACING]

Originally Posted by AbsolutHank

Would I be able to drive the car with the new LT4 Pump and Injectors on the Magnuson tuning to get it to a dyno? Low speed/RPM of course

I would not, it will be way too rich.

Ted.

[thescreensavers]

Originally Posted by JANNETTYRACING

You only have 6 milliseconds to get your fuel in the cylinder, the size of the injector determines how much fuel you can flow within that time window.

The LT-1 injectors are pretty much maxed out.

Increasing pressure with higher pressure HPFP, More pressure can get more fuel in the cylinder within the time window but only incrementally.

Larger injectors allow you to put more fuel in the cylinder with less opening time.

Ted.

Ted thanks, looks like it would be wise to upgrade to LT4 equipment.

[AbsolutHank]

So now I'm thinking my plan should be E85 flex fuel sensor, 85mm pulley and retune to get me close to 600rwhp. Thoughts?

[exxit]

Originally Posted by AbsolutHank

So now I'm thinking my plan should be E85 flex fuel sensor, 85mm pulley and retune to get me close to 600rwhp. Thoughts?

As far as I know e85 is going to need a full fuel system overhaul to be used with boost. The fuel just doesn't reach the right pressure with our stock setup.


Lucky for us, aka **** our lives, a fuel system upgrade is about 900 for the high side, about 80 an injector, and so far the only low side I know of being circulated as a "kit" belongs to Cordes, they're selling that setup for 1700. Plus install, might as well add a fuel lobe cam at that rate... another 3k in parts (gotta do a full DOD delete even if you're manual) and labor there, and WALLAH. :/ It is what it is I guess. Will have to have fun at around 600+ on meth until I can pony up for a better starting platform, ie ZL1