boosted 4age blue top

[trdfxgt]

done a search the was alot of different info but not really what i need

what i want to know is can i use my factory na computer to make it work ?

and iv been told the factory motor can handle boost up to 10 to 12 psi is this true

i have a nissan skyline turbo witch ill put on it is this an ok size ?

[Mr Revhead]

no

yes, with proper tuning.

no idea

[SIDE_FX]

yes but u have to trick the map manyways of doing, bleed it out or a diode

[EVLGTZ]

Yes std ecu cant be made to work with boost but its not ideal and no where near as good as aftermarket ecu. But can be done.

the old r32 skyline turbos are pretty well suited for a cheapy turbo. Spool pretty qucik on the 4ages and well suited to low boost levels like up to 10psi. A bit unreliable tho once ya start running decent boost levels on them.

[trdfxgt]

cheers can any of you guys explain to me how to do the computer mods ??

[Silent Knight]

cheers can any of you guys explain to me how to do the computer mods ??

Buy aftermarket ECU.....Get it wired in....Get it tuned.

[MrOizo]

HAHAH this is what i did...

Lasted a whole 10 mins... nuty|mike will vouch for me when i say it was a $&#$% awesome ride

the engine can handle the PSI as long as you be very careful in the setup..

I had a AW11 MR2 and had a flange welded on the bottom to fit a T3 from a skyline.

Parts i had were intercooler, extra injector controller, and a few other bits but me being too impatient, i hooked the turbo up, and fed that straight into the intage manifold. ran it in diagnostics mode as it voids the PSI readings over +3PSI (or what ever it is).

Took it up the road a few times and something went pop, and smoke was everywhere.


If i had have taken my time, and spent a little more on getting things fitted properly then it would have been sweet.

Stock fueling, timing and no IC is not a good look

Would be a good idea to go aftermarket ECu as has been said but if you wanna do it on the cheap, make sure its on the sensible side

[trdfxgt]

if it helps i have a evo4 intercooler also a set of red top injectors and a set of skyline injectors a rising rate fpr id like to know how the mods are done as i dont care to much about blowing this motor up as i have more id like to see if i can make this work on the cheap cheers

[Drifter4ag]

engine can handle 10+ psi no probs with a largeish turbo
diagnostic mode
standard computer with extra injector controller is your best bet ..
you can do about 9psi with a t25 with near stock setup bar the fuel pressure reg.

Intercooler is a must
and timing wound back to 0deg - 5deg base

[trdfxgt]

cheers for tha so what is an extra injector controler ? sorry its new to me

[trdfxgt]

if i get a new ecu will the standed fpr and injectors be ok ?

[ants_ae92]

how do you run a 4age computer in diagnostic mode?

[Xyrath 86]

look for the yellow plug thingy next to the firewall and take the cover thingy off and connect the two peices inside with a bit of wire.

[ants_ae92]

is that the same thing you bridge out when you set the timing? I have a red top big port so I don't have those yellow things?

Also can anyone explain what the computer will do in diagnostic mode?

[trdfxgt]

do you need to run that mode to use the computer with a turbo ?

[EVLGTZ]

its one way of doing it.

the other is to bleed the map sensor.

both ways are not ideal. Aftermarket ecu opr the likes of a powerlink is by far the best way to go