Have Big 16G and questions, what else i need?

[studs]

I have a big 16G that I have been staring at and it's killing me. I just don't want to slap it on I want to do it right. I have been doing my homework but I keep getting more ?'s than answers. My setup is stock 1G as far as engine goes (except free mods) `94 TSi 2.5" dynomax ultraflo catback. I also have a walbro 255 (not yet installed) and I rewired my stock pump. I have been checking out manifolds and I think I may go with the SBR manifold or the Evo manifold. I am still undecided about the exhaust whether to replace the downpipe and o2 with 2.5" or go full system 3", money is tight but would 3" be a gain worth the money? Also if I get my manifold, turbo, turbo back exhaust installed with the walbro fuel pump what else will I need? Can I get away without bigger injectors and SAFC as long as I leave the boost alone until I can afford them? Will the stock FPR holdup or should I replace that also? I am just trying to avoid melting down the motor, I have a newly purchased pocketlogger that I intend to use to monitor things and a useless autometer A/F meter, i am either going to get programmed or replace with a EGT. Anybody who could answer a few of my ?'s or could point me in the right direction would be greatly appreciated.
Thanks in advance.

 

[tsitalon92]

What exactly are your plans for the car? What do you want to run with that turbo?

 

[CyberEye]

Your 255L pump will outflow the stock FPR. You may be able to get away with the stock injectors, as long as you leave boost alone. But keep an eye on it with your logger.

 

[Quasimondo]

Your 255L pump will outflow the stock FPR. You may be able to get away with the stock injectors, as long as you leave boost alone. But keep an eye on it with your logger.

You can only get away with stock injectors if you keep it under 15 psi. Anything past that and you'll lean out. BTW, did you check out the tuning guide at the top of the page? That's a great way to start on modding your DSM.

 

[studs]

What exactly are your plans for the car? What do you want to run with that turbo?

I have not set a specific target I would like to see 12's or better I have a budddy with a tuned GTP who keeps whooping my ass he's running about 12.8 but whatever I can run and still keep things relatively reliable is what I am shooting for. I have high aspirations but I am trying to be realistic with my funds so probably 12's.

 

[studs]

You can only get away with stock injectors if you keep it under 15 psi. Anything past that and you'll lean out. BTW, did you check out the tuning guide at the top of the page? That's a great way to start on modding your DSM.

Injectors may not be a bad idea then huh? I did also see the tuning guide, I've seen a lot of these and every site has a different order, plus I kind of bought the parts in the wrong order I guess, I justt want to get the turbo on so I will install whatever I have to get things rolling. I've had this car stock for way too long. Thanks for the advice

 

[CyberEye]

Injectors may not be a bad idea then huh? I did also see the tuning guide, I've seen a lot of these and every site has a different order, plus I kind of bought the parts in the wrong order I guess, I justt want to get the turbo on so I will install whatever I have to get things rolling. I've had this car stock for way too long. Thanks for the advice

They wouldn't be a bad idea at all, upgrade to 550's.
Having the car stock for a bit longer will forever be better then breaking something because you got impatient.

 

[Verticaljump1]

You might want to get an upgraded compressor outlet elbow. The stock one is dinky and it would make better use of that forced air w/ the big 16g. This is unnecessary though the car will run fine without it. If you buy one through Dejon Tool, they will give you a porting template, and just use that and a rat tail file to port out your compressor elbow, this will assure that your air coming from the turbo will be pushed out with no limits. Again this aren't requirements just suggestions. Injectors are an excellent idea, the stock 450ccs won't let you push much past 15psi, and your big 16g can handle 19psi daily. If you do run 19PSI make sure you don't make WOT runs too often cuz that stock smic will get heat soak. Another unnecessary mod would be to buy a Stainless steel oil feed line (taps oil from the oil filter housing). All you need to do this mod is the ss feed line (should have banjo bolt and fittings with it) and a bolt that will fit into the head to block of the orignal oil feed location. This mod will feed your turbo clean, uncirculated oil (of course it'll be circulated but your turbo will be the first to get it). The stock feed line works well but has the potential to send particles to your center cartridge and I'm sure shafts going 150,000rpm don't like particles Seems like you're going in the right direction man, good look and keep an eye on your feedback tools.

 

[studs]

Thanks for all the feedback you guys are a great help as always, now I know where i'm going with my refund check.