Finally going to turbo my 2011 aveo5 lt

[petrified.rabbit]

in most late model cars, there are only 2-3 "types" of injectors.. so many are "interchangeable".

[Pooh Man]

So keeping a reasonable hp goal of say 175-200 flywheel hp, what injector size would be recommended? Im guessing at the minimum something like24-28 pound injectors?...Perhaps I can plug n play with the 2.4 ecotec or lsj injectors. Opinoins r more than welcome...

[Daox]

For 200 hp I'd recommend something around 40 lbs/hr (425 cc/min).

Fuel Injector Calculator from WitchHunter Performance

[Pooh Man]

Good plug, lots of injector info.

[Hondahunter]

I have been looking for the rating on our stock injectors and cant seem to find it... anyone have any idea

[Pooh Man]

Same problem here based on our stock hp they are probably 19 lbs or so. I would bet the 1.4t injectors would be good enough for a low boost street application, afterall trifecta tuned 1.4Ts hit around 160hp/200+ torque at the wheels. Zzp also has upgrades available for that motor. Im debating the whole issue I am thinking a safely built turbo aveo with stock internals would be around 20hpa more than a 1.8N/A swap with a ton of headaches due to unforseen problems- the main ones being emmissions and clutch rating. Also somone correct me if Im wrong but the trifecta program has changed- the user has the option to de-regulate emissions sensors, thus freeing them from legalities, but to tune out your O2 sensors just leaves them in an open loop which comes up as a "system not ready" under OBD2 emissions scans and in IL that is not a pass, just a no fail distinction and u have to test again at a latter date. My header alone has given me nothing but headaches trying to use O2 spacers to stop the MIL, Ive tried about 4the combinations n have had no success. I believe a tune is in my near future. I kinda ran off topic but those r where my concerns lie regarding a turbo. EMISSIOONS R BS the modern car with no cats burn cleaner than any deisel or pre 90's cars out there.

[Pickles]

You can't tune out the o2 sensors. You can make it so the mil/del doesn't show up on any code reader or in the dash. Totally turns it off in the ecu

[Pooh Man]

So what would that show with a OBD2 scan?????The method that Trifecta uses seems to be the best way to deal with late model cars. I read on another forum some guy passed his state emissions but his car said system not ready but no MIL/CEL was on.

[Hondahunter]

Thanks pooh that gives me at least a base number to work with. What are your thoughts on kicking pressure up in the injections to about 60

[Pooh Man]

Its never a bad thing to assume raising your fuel pressure for turbo but I cant really say till u start ur tune. Some guys tune of exhaust gas temps, I tuned 3 times all of which were dynos I would set a reasonable amount of boost, make a run, and tune off of my air fuel ratios. Id start around 13.5 and richen at the onset of boost. I always felt 12 ish was good till rhe upper rpm n thats where I would dip low to 11s . Thats just a base some engines r more resistant to knock than others. Keep in mind you could piece the hard parts together n have trifecta shoot u a base tune. To have them tune u on a dyno is like $400+ per hour. You could tune urself in a more primitive way using a rising fuel pressure regulator that raises fuel pressure based on boost. We ha e it a returnless fuel system so u would have to route in an additional in line fuel pump n run a return line behind the in line pump.So basically as ur boost increases so does ur fuel pressure based on a given ratio of the regulator(ex 8:1 or 10:1). Its a little crude but Im a lil older so I am more familiar with the stone age days of s afcs n rising fpr s ...