I was looking at the supercharger info and noticed that they changed the plugs to Denso K22PR-U and also changed the injectors and fuel line.

Would anyone know if this would also be a good change for the ZPI stage 0 turbo, I presume the plugs are colder and I don't know what size injectors they switch to. Any help would be cool.

 

the plugs have got to be just a degree colder or two. bigger injectors. i wonder why the call for the fuel line change. with all the discussions about the pressure being regulated from the tank i dont see how changing the line could do anything, but maybe talking to trd would be informative.

i wonder if you could do those three upgrades and try to find someone at a dealership that would flash your ecu. the psi is the same for the stage 0 and the trd kit.

 

That is exactly what I was thinking

 

if it is possible getting a different b.o.v. with a recirculated setup should eliviate the occasional backfiring you mentioned.

 

do they switch the car to a return system??? where are these instructions i need some reading material for work lol

 

there is a thread further down the first page of power hungry that has a link to where the instructions are posted.

 

freekin sweet

thanks

 

Getting the ECU reflash looks promising but I am affraid since the stock ECU can handle boost so well that the reflash is really for emissions and there might be a possibility that you will loose power (or it could be just for the bigger injectors). Obviously this is only a thought and no one will really know untill someone trys it. Anyways good luck ScionDad and hope to see some good changes to your stage 0 in the future.

 

It's only on occasion that the backfire happens, but it's annoying. I should have the AF wideband set up this week and get a better idea of what the mixture is. I was just kinda shocked that they changed the fuel line. Plugs, sure. Injectors, ok. Fuel line, why?

 

its still only doing it at wot when the auto shifts? and just occasionally? i would try colder plugs for sure. that might be all thats needed. i know a lot of factory turbo cars have a lot of problems running rich and bogging when the bov is switched to atmospheric.

 

Ding Ding Ding...we have a winner!!!!
The main reason why the ECU reflash is part of the kit is to keep emissions in line mostly, and then to fine tune the injectors(which hopefully emanage will hold the tune after time being that nobody has still yet proved to me that their long term fuel trims are not rediculously high.)

 

Would being Auto have more or less to do with the occasional backfire too? I'm looking to be Stage 0 equipped in Nov., but I'm 5sp equipped.


PS...this might sound like a ricer question, but....... does she spit fire?

 

The auto might be the issue. Well, I haven't seen any flames, but seriously, I might have to follow at night and see.

 

naa...our cars arent flame throwers...my xB did that a lot. It used to do it when I would pull real hard then let off the gas and then hit the breaks...it would do it the minute it dipped down into vacuum. Its not too bad for the actual exhaust, but its a sure fire way to blow out your cat in record time You smellin rotten eggs yet sciondad?

 

Not yet.

 

Well, Kenny at ZPI explained whats up with the SC kit parts and my questions. The injectors they send out are 410cc. Hardly worth the increase from 372cc or so stock. The fuel line they send is due to the stock fuel line is metal all the way. It is just surrounded by rubber...so that explains the new fuel line.

 

no point in doing any of that then. i would just do colder plugs and if the backfiring isnt gone go to a recircutated b.o.v.

 

I was wondering if it was a more insulated line due to higher under hood temps.. .that may be what they are doing with the rubber coated lines.

 

Yup, that's my path right now.

Engi, you may be on to something there as well. It does get pretty toasty under there.

 

so what did they change your fule line too then? I noticed that the other day that the fuel line goes from a metal line on the firewall to a metal line wrapped in rubber then into the fuel rail. Did they just switch the part that goes from the fuel line on the firewall to the rail?