EcuTek Releases Phase 2 RaceRom !!

visconti

The Nissan 370 doesn't have a fuel pump controller like the Subaru or like the GTR... so there's no duty to log or change.

The pump is ON or OFF.. that's done with a relay that's controlled by the ecu.

Even if you have a car with a pump controller like subaru or gtr, logging fuel pump duty isn't very useful using OEM hardware. It's really only used to make sure the fuel pump isn't overrunning the fuel pressure regulator at idle.

We found this out when we started wiring fuel pressure sensors to the ecu to monitor fuel pressure on bigger powered setups.. we found hardwire 485s was causing major fuel pressure creep at idle! I ended up making a plug and play hardwire kit that allow you to keep variable ecu control pump speed with all the advantages of going direct to battery power

On brush-less fuel pumps we can make the speed of the pump very variable using certain pump controllers + custom ecutek code.



John

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John@vTune.us
EcuTek Master Pro Tuner

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synolimit

Well that makes sense then!

Now do a need a bigger one

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13 370z-

visconti

I haven't done that test myself.

I know a full bolt-on car does tend to use all the of injector

Adding a DW300 fuel pump should bring the injector duty down a little..

Swapping the pump would be the best option for everyone.

On the Flex Fuel 370z I did, I kept the stock pump and installed GTR Injectors.. works pretty well

John

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John@vTune.us
EcuTek Master Pro Tuner

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synolimit

That's all I want to do. GTR injectors with the stock pump on E85. If I get 10hp and get some for $100-$200 you can't beat that power to dollar ratio!

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13 370z-

visconti

Yes, but like I've explained in my other thread you won't see any power gains going from 93oct to ethanol on these cars.

Not a single hp.

If someone shows gains going from pump to ethanol they should probably spend more time on their pumpgas map.


Now 91octane is a different story, they're gains to be had !

John

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John@vTune.us
EcuTek Master Pro Tuner

Visconti Tuning Webstore | Support Documents & Downloads

synolimit

I wonder if seasons play into it too. Like a 93 tune in January might not show same results as July. Like e85 I believe all gas changes throughout the year. Thats a way to show a gain between the two. This is one test I can't do a back to back on as I'll need the tank empty to fill with e85 while at home, swap injectors and flash there to comp for the bigger ones.

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13 370z-

VitViper

That's quite a bold statement. We regularly have even 2.0L 4 bangers pick up a whopping 5hp on E85, even being at MBT on pump gas. Does the "fuel is naturally oxygenated" mean anything to you?

njobe89

have you had any 370z's?

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2 plus 2 times 2 = ? ... hint, it's not 8

Stillen CBE, Stillen Gen 3, TP's, Uprev tuned - 324whp/264tq

imjello

So are the fuel lines rated for e85? i reading through this thread backwards, so i hope i didn't miss anything, but it looks like we are just swapping injectors. I am concerned long term breakdown of the fuel system.

e85 is something i have used before ( on different cars ) and would like to use on the Z if there is a benefit

thanks!

VitViper

We run E85 on vehicles with fuel lines from the 1990's and they're fine, why would you be worried about the lines in the Z? It's not a boat... lol

imjello

i am not sure about boats, however E85 is said to be corrosive so i was just asking before adding it to my fuel system. Seems like a lot of kits change to SS lines. i would be interested to hear from anyone that has long term results in a Z, or DD, with e85.

https://www.flyinmiata.com/fm-nb-big-flex-fuel-kit.html

Lethal Performance Coyote / Boss 5.0L 850-2000rwhp Return Style Fuel System