CJM 370z Fuel System Products: A Brief Overview.
 

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Thanks!

FAQ:

What is required for an E85 conversion? A tank of E85 and a full retune. If you are boosted, you will run out of pump and injector MUCH sooner. I would not bother with smaller than 1000cc injectors when boosted, or smaller than 340lph pump.

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^What she said

Waiting on Stage 2 RRP details!

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I'm in

:tup:

Ditto

And I'm sub'd

Charles, I'm curious what do you think max WHP is for e85 with 1000's, aeromotive 340 and your stage 0 return?

With 11:1 compression (stock) and properly aggressive tuning (lots of timing, scary for new e85 tuners like I was, had to ease into it), I would say max 600rwhp STD a Dynojet. You MIGHT need the Stage 1FS to get there though... That is how I did it (well 586, I'm sure a half psi more would have taken it to 600 but I felt I pounded on the car enough that day). I have not tried pushing the stock feed line so far but I have heard of several cars on gasoline dropping fuel pressure before making it to the power I have. So I would confidently rate a S1 at 600 max with 340 pump. Stage 0... I just don't have enough feedback to say yet.

The stage 0 system isn't going to offer a whole ton of extra fuel alone. It's basic benefit is that pressure is being regulated after pressure drops in the plumbing. This will result in a few more psi at the rails and getting a little more out of your injectors. I would say that it's going to get 20-30hp past a totally stock system with the same pump and injectors, but I personally haven't pushed the stock system to find its end. Some reports are snowing pressure falling off as low as early 500s on gasoline. The stage 0 can also increase pressure with boost which is nice... But if you're pump limited before injector, this might not get you much further.

With a low compression built motor I would tone down the ratings/estimates 25-50 HP. Pump limited before injector in the 340/1000 combo. The 1000s should be good for about 625-650rw in a low comp motor, and close to 675-700 high comp if you have the pump for it.

You know what, it's so hard to put ratings on the stuff... People in the Z world often consult with me when they run out of fuel and want to talk about where to improve it. When I take all the results and feedback I have seen from various cars, there is ridiculously low consistency in results, making it so hard to rate a setup, or even a pump or injectors. I should probably start compiling a fuel system performance database so people can see what has been done with different configurations.. Specifically for the VQ which offen seems to outperform other engines in terms of efficiently using the provided quantity of fuel.

interesting, I'm 10:1, somewhere around 600whp with my gtm stage 2 on pump at the moment (dynoed 575hp/550tq at ~14psi) so I was considering switching to e85 and pushing for 650whp+ at 20-23psi.

I don't think you will make it to 650 on e85 with the 340 pump. The injectors can barely do it... But that pump is out of its league at that point. Especially with that high of boost pressure... You will want a return system for that type of boost. I would generally recommend 10+ psi = RFS... But then the pump needs go up.

I have your stage 0 return already, I am curious about this stage 1 kit that moves the line away from the turbos. I'll call you tomorrow Charles.

That could be perfect if you want to be the test mule. You would be the first one to run that exact combo that I know of. You could run the stage 1RFS. No wasted parted from your stage 0 kit to do it. That combo with the 340 could stand to demonstrate how far everyone can expect to get before having to go nuts on the stage 2+. I personally have been running my stage 1 non return. My boost isn't high enough and the stage 1 removed enough pressure drop to not need a regulator up front.

Do you have the original stage 0 with the damper outlet, or the second version with the splice at the 2 bolt flange?

I have the 2nd version with the block that goes in-between the 2 bolt flange near the passenger/front side of the engine.

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Cant believe how fast time has gone! Started adding photos. More coming this week.

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Going E85 on the Fast Intentions kit. Need a solution to my 1000's and 340. Goal of 525w/425t.

More updates coming soon! I am absolutely swamped the last few days and now today I just got a massive batch of parts back from the anodizer... much of which orders were already waiting for. Later this week I intend to setup a little whitebox to take nicer photos with and show of the latest batches of parts.

I also want to mention that the standard 370z Twin Pump MIGHT be getting discontinued soon. I am currently involved in R&D on fuel modules for a few other platforms and some new designs I have come up with would be awesome for the 370z. I came up with a way to do a 370z twin pump module (or use it as a single for its other benefits over stock module) that is good for over 1000rwhp even with E85, while having an internal filter!! That means no filter to add under the car. Also, get this, a built-in Bosch regulator so that you are not forced to switch to a return system with engine bay regulator if you don't need it. Lastly, while this design wont have as good of surge protection as my RRP... it will be a great improvement over stock and meet the needs of non-track racers. ETA on this... hard to say. I am going to try and finish it for the other cars first.

Added some information on the new Stage 2 SE fuel system that was finished last week.

Like, like, like!

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OOps... maybe I need to work on updating and finishing this thread too. So many threads of mine, so little time.

Are these guys still in Buisness? I've tried calling several times and no one has picked up

Yep. Very much still in business. Try PMing Phunk.

No, they've closed down many years ago!

J/K, they're very much still in business, PM phunk here.

Definitely still in business. Charles and CJM are top notch! Shoot Phunk a PM, he'll get back to you.

Jason@AAMComp, I need to speak to you please, can I shoot you a PM?

PM sent

Very much here! Typical work hours here generally about noon or 1pm to midnight or so!

See? I told you! Charles is a man after my own taste! :)