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No, it doesn't let you build more boost, it tricks the ecu into not seeing the extra air thus raising fuel cut. OP, install a set of stock injectors with new o-rings. If your engine harness hasn't had the new ev1 clips put in, your 550cc's may not work anyways until you wire in the new clips...

No reason to swap out the injectors unless you go with a bigger turbo. Make sure the engine can handle said upgrades by doing all the proper maintenance. First things first, get the engine breathing better first.

Look, if you don't want to sink money in it search for a newer car. You won't take a 20+ year old car without having a money pit.

Try monitoring your VF signal while driving it, what is it doing?

I'm running my mods on stock toyota OEM HG with arp head studs. and yes

I'm curious about this too. I'd like to import a jzx81 chaser for my daily.

The one major thing people forget though, these cars are 20+ years old. So the parts on them are already fatigued and barely hanging on but yet people ignore this fact and think because it's turbo, it must be a racecar. People will take a car with 200k+ miles and crank up the boost with stock...

It's amazing how not only was the information handed to someone but they are too stupid to fix the problems at hand. Lets take an already bad running car, throw a bunch of parts at it and expect it to run better!

I'm with Nick, why risk it when you can just change the injectors and stop being a cheap bastard.

My regards to you was the safc. You don't need a safc to tune lex/550 mod with. There's a reason each part is 25% bigger than it's counter part, that means no tuning. Getting to 300rwhp is only gaining roughly 100 rwhp.. These cars are 232 bhp in great condition, so add up the years of abuse...

Jordan strikes again!

How many miles was put on this?

I'd say this is in the wrong section, also I bet you popped off an IC pipe or something..

Oka first off, 91supra313 is wrong about a few things. You can 'cheaply' get these cars to about 300 rwhp without much being done. Many people are selling their minor bolt-on parts if you wait. You also don't need a safc to tune with when you go to lex/550's. You want an easy 300 rwhp? Do...

Have you done a boost leak test at all? I know when there was a hole punched in my IC inside the fins, my car would buck like crazy anytime it hit boost.

Bucking could be caused by.. Dirty MAF or improperly adjusted TPS(ECU thinks the throttle is closed but you're trying to accelerate) or loose transmission/engine mounts or driveline slack etc etc..

Our MAF's can't be cleaned. They're karman vortex.

Yep, that would be amazing to install on my car. As paranoid as I am about every little sound the car makes..

Okay so I'll rephrase it. Whenever trying to time an engine, the TPS needs to be set properly.

Okay, just wait. Whenever you move the TPS, you need to recheck your static timing with t1/e1 jumped. When I adjusted my TPS but didn't reset my static timing, I was running near 0 degrees timing.