Okay so the stage 0 doesn't come with a fmic or emanage,
but aren't cooling and fuel management two of the most important
things for a turbo kit? And what exactly is supposed to cool the
air going into the turbo on the stage 0?

 

we are well inside the efficiency range of the turbo and at the low boost of the kit a FMIC is not required.

We do use a larger MAF pipe and send you instructions on how to recalibrate the MAF. This is conjunction with the factory A/F sensor allows us to do this. We sell the emanage and the FMIC as an available option

 

zpi tested their stage 0 for quite awhile and decided that the stock ecu can handle the small amount of boost and compensate enough that the additional cost of engine management would not be forced as an included part, raising the price. there are kits running fine now from them, so they must have made a sound decision. though im sure they would be glad to help you add that level of safety to your setup. i wouldnt run f/i without some kind of fuel and timing control. also at the low boost of stage 0 they didnt include the intercooler. probably because of additional cost, complicatiion of the install. if you want to cool the air charge after the turbo you can add an aftercooler, or water injection. the idea of cooling the charge is to safegaurd against detonation, additional power with cooler air is just a pleasant byproduct. they must not have experienced a detonation problem during r&d without some kind of cooling so it wasnt included. personally if i was looking to cool a stage 0 i would look to an efficient side mount placed just before the bov and throttlebody. with a heat sheild and some custom air ducting or a water mist system it would be efficient and suitable to the needs.

 

Ok you guys answered my main concerns. I have a friend with a wrx and from talking to him he was really
adamant that a fmic and emanage were vital, but like you
stated, with the small amount of boost it will run safely.

 

get some nice guages and keep a close eye on things. that way you will know if something is wrong. i say wideband or egt. i would prefer wideband. dont see the reason in both because they basically tell you the same thing. lean or rich. boost pressure to watch for spiking, creeping. and i would get oil pressure. a lot of people will tell you autometer is cheap and good for guages but from the boosted cars i know a lot of the owners complain of innacurate readings compaired to others.

 

Yeah, my friend suggested I get a wideband and boost gauge, specifically to watch for spiking, but he was unsure
of the safety of running with no fmic or emanage.

 

i dont remember anymore the stock boost on a rex but i think its in the 14 range. much higher than the stage 0. its a good idea to have those things for safety, but whether its nessecary or not is your decision. get the guages, you need them anyway and then you will know if you need an intercooler or if you fuel ratio is off.

 

I'll at least get the gauges that's for sure.

 

An intercooler/aftercooler will always help .. but as they stated, it is not necessary.

 

I'm leaning towards getting the aem uego,but would I need
the single channel or dual channel? And boost gauges not
too sure which yet, reliability wise, any suggestions?

 

Single Channel Gauge Type AEM UEGO will work. We generally have these in stock.

We also have the Innovate XD-1/LC-1 Gauge combo kit. It's a nice unit too.