RB25Det Turbo upgrade

[Pockets]

Okay, first thread on here so here goes nothing, i've got a 1996 skyline Gts and i've got a garrett T4 .60 A/r turbo with an HKS cast iron manifold and all the hard piping + a FMIC what i need to know is can i put this turbo on my car without upgrading the ECU or injectors, IF i do have to upgrade the ECU and or injectors what should i use? Any help would be appreciated

[Cjmartz2k]

can i put this turbo on my car without upgrading the ECU or injectors

no

IF i do have to upgrade the ECU and or injectors what should i use?

search "ecu" and "injectors"

[Pockets]

Thanks that response was very helpful I've been searching this forum for a few weeks trying to find the information i need and i can't seem to find it.

[crazyandevil05]

no, you really havent searched if you couldnt find that. basically your stock computer will only say "injectors, stay open for X miliseconds" based on how much fuel should be put into the engine since it knows how big the stock injectors are. but if you double the injector size, the engine will still only say "injectors stay open X miliseconds" because it thinks the injectors are still stock, so you'd be dumping twice the fuel into the cylinder. now the computer can adjust up and down, based on the o2 sensor, but not enough to fit in bigger injectors. if you're going the bigger turbo and injector route, definatly do not skimp out on tuning. and with a bigger turbo, injectors would have to put in if you're planning on going more than ~ 300 hp (and actually, i would suggest even then, just because theres no point in upgrading your turbo if you're not doing that, and 300 hp is still pushing it on stock turbo and injectors). so, you should just keep it stock until you can get a GOOD tune. no point in dumping money into a huge turbo and everything, just to have you're tune ruin your engine. would you rather have 350 hp that runs, or a 500 hp monster that is going melt down?so, for tuning i personally just use a SAFC II, which is fine for me, being stock but for a boost controler and small fmic. i only have it to adjust for my MAF. but if you search, you can find loads of info, on everything from megasquirt to nistune (i know, because i have searched yahoo and the forums and found boat loads on this). sorry to rant on, but i've been wicked bored!

[Pockets]

I must not be using the right search terms, but thank you very much i normally work on good ole gas guzzling V8's with carbs and blowers so the turbo/Fuel injection is something i am new to

[Cjmartz2k]

Well said Crazy&Evil.

OP- I'll ignore the eye roll since you seem to have gotten the point from C&E. You cannot just plug in bigger injectors with out and ECU to tune them. Your stock injectors are not beig enough even for the turbo. Leave your stock stuff on there until you have ALL the supporting mods. You COULD bolt everything on and drive it around, but then you couldn't boost it at all, or the motor WILL go bang.

[Pchabz]

Hey if you search hard enough online, youll probly come across some turbo kits. If your looking for a easy job, some kits come with injectors, the turbo and a reflash for your ecu.

On the other hand, there are some stock replacements for the turbos, and rebuild kits for the stock turbo. Rebuilt stock turbos from some companys are guaranteed to hit 25lbs of boost, happily.

Injectors on the other hand, I like nismo as for quality. Have seen them presented at a product show/ personally dissasembled and cleaned, and for sure your getting high quality.

Good luck!

Although, dont you just wish your car did what my bmw did =P certified injectors tell the computer what it is, the ecu will auto retune the car to run smoothly on the injectors provided (certified bmw/ dinan injectors that is)