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-   -   injector upgrade? (https://www.subaru-svx.net/forum/showthread.php?t=40719)

timbo666 09-12-2007 02:37 PM

injector upgrade?
 
so i've got a clogged injector, and i figure i might as well throw something alittle cooler then OEM injectors...just cuz. i've heard that the stock fuel pump can support alittle more horse power than it does. so my question is, are there any after market injectors that might be able to add alittle more pep to my 92? or is oem the way to go. i plan on doing a total overhaul come summer and if all goes to plan ill be needing bigger injectors anyways..

thoughts? advice? thanks!

Crazy_pilot 09-12-2007 03:14 PM

Buy an ECUTune stage 2v7, a Z32 MAF (out of a 300ZXTT) and 370cc SR20DET injectors. I don't think any other injectors will work without that upgrade.

If you're going for more horsepower, you have to upgrade the MAF. The stock injectors can throw a bit more fuel (not a whole lot, but some), but the stock MAF can only read 230-240HP worth of air. If you modify the engine to make more power without changing the MAF the engine will fall on it's face.

The ECUTune stage 2v7 chip, MAF and injectors are good for supporting ~500HP.

Guyver280z 09-13-2007 10:10 AM

So the 300ZXTT Maf with fit like bolt on?? Or some modding need to be done??

Same as the injectors... are those just remove and replace??

I have ECUTune....1 I think, is there a way to know wich version I have and is it easy to upgrade??

Thanks:)

JaySVX 09-13-2007 10:29 AM

The MAF is bolt on, but the wiring harness needs to be clipped off. You'll need the plug from the z32 MAF, which has 5 wires, to splice into the SVX MAF which has 4 wires. You just leave the one disconnected. I don't know which off the top of my head, but visit http://ecutune.com/ and the info is there.

immortal_suby 09-14-2007 05:02 PM

The injectors fit in the svx fuel rail.
For the injector wiring you can get the nissan wiring and splice the plugs in.
Or you can keep your stock wiring intact and use a dremel tool to cut away some of the plastic on the nissan injectors. That's what I did and it worked great.

You can tell what exact version you have by pulling your ECU and looking at the chips. It will be written on them.


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