Just finished mods

Just installed 13g's,LS6 MAFT, and profec B spec 2. What fuel pump should i upgrade to? Should I go with the denso pump on 3sx's site or would it be alright just to go with a walbro off of ebay? If the walbro is alright should i go with the 190lph one or the 255lph one?

I forgot to mention that those are my only mods. right now i have a a/f gauge and a boost gauge to monitor things but will be datalogging by this weekend

http://www.stealth316.com/2-fuelpumpguide.htm

This was taken from that page:
"The Denso fuel pump 195130-1020 (the Supra Turbo MKIV pump) is one of the best in-tank upgrade choices if you are using injectors up to 550 cc/min and are providing at least 13 volts to the pump. When 18 volts are supplied, the Supra pump is good for injectors up to 880 cc/min. At 13.5 supplied volts no other in-tank pump, except for the R33 Skyline GT-R and A'PEXi BNR32 fuel pumps, flows significantly more fuel up to 70 psi line pressure or 27 psi boost. It is a direct drop-in replacement; all other non-Denso choices require some modification to the fuel pump assembly. It is as quiet as the stock pump. Best of all, it can cost only $180 at Conicelli Toyota. One disadvantage of the Supra pump is its relatively heavy current draw (at 13.5 V, 16A @ 43 psi, 19A @ 70 psi) and large decrease in flow as supplied voltage lowers. Good, heavy-gauge wiring (meaning re-wiring the fuel pump electrical circuit) is a requirement to get the most out of this pump.

The Walbro GSS341 model (also called the 255 lph HP) flows a little less than the Supra Turbo pump up to about 67 psi line pressure (24 psi boost), when 13.5 volts are supplied to both pumps. However, at 12 supplied volts, the Walbro GSS341 outflows the Denso 195130-1020 above 55 psi line pressure (compare John Cribb's Supra pump data to the Walbro charts). Like the Supra fuel pump, the Walbro GSS341 is an excellent choice for 450 cc/min injectors, especially if the fuel pump has not been re-wired (12 supplied volts). Also like the Supra pump, it can be used with up to 610 cc/min injectors if 13.5 volts are supplied, and up to 720 cc/min injectors if at least 16 volts are supplied. The Walbro GSS341 draws about half as much current (at 13.5 V, 8A @ 43 psi, 10A @ 70 psi) as the Supra fuel pump. Some slight modification to the fuel pump assembly is required and it may not be as quiet as the Denso pumps. The price is even less than the Supra pump at $100 to $150. "

However I would recommend reading the whole thing to get more information.

I am very happy with the walbro I got from www.importpoweronline.com (run by a 3s owner).

What injectors do you plan to run?
Before you start playing with the fuel System I'd consider a data logger (www.pocketlogger.com)(https://secure.miragecorp.com/automotive/)

Until you've upgraded the injectors I would not push the boost past 12.5 psi.

Look at my siq for some things you should have with upgraded turbos.

I already have a datalogger but i just haven't had the time lately to use it so i can completely set everything up the right way. I'm only running wastegate pressure right now so i shouldn't have too many problems. I've just done some very simple adjustments using the a/f gauge just so the car isn't running lean at any point. I was actually leaning towards 450 injectors and the walbro 255 because i'm a high school student right now and I don't have alot of extra money and I also don't plan to be running my boost that high. I can't really gut my cats because PA requires emissions inspections and i wouldn't pass without em. Will an EGT be necessary if i'm datalogging or would it just be a good idea?

Just to respond to the PA emissions thing...first off where do you live in PA, I spend the summers near Philly. Anways, I would think you could gut the precats, then just drive the car and get it warmed up prior to getting the emissions test. Also you can lean it out as much as possible without knock prior to testing, and lastly there is a bottle of stuff at pepboys that helps with emissions. It actually has a picture of a 3000gt on the bottle. If you do all that, you should pass emissions just fine.

I live about 30 miles SE of Pittsburgh. I was thinking about later getting a ATR downpipe and highflow cat. If i were to gut my precats do you think it would no longer pass emissions with the downpipe and main cat? That's the only reason that I haven't gutted my precats yet. Would a highflow cat even be worth the money or should i just gut the precats and get the downpipe?

My car has been running rich ever since I put the MAFT on. Is it ok if I would wait till the weekend to tune it properly with the datalogger? I would do any major damage running richly will I?

It shouldn't do damage, as long as its not running too rich..its not great for gas mileage or anything, and you might get white smoke out of your exhaust if you run really rich from unburnt fuel, but I doubt you will do damage.
I plan on gutting my precats, getting the ATR downpipe. Then when emissions come around I will shorten the downpipe and put in the hiflow cat, then just drive around pretty hard to get the car warmed up and spray in that stuff that helps with the emissions. I think that will do the trick. When I get the larger turbos and injectors I will lean my car out to make sure I pass. Basically just don't drive too aggresively until you datalog, because you don't know what you are doing to your car.
Also do you have the original MAFT or 2.0, I've heard 2.0 has some good advancements in tuning and you can upgrade from the original for only $30. What do you have your MAFT settings at right now?

My MAFT is version 1.37. Right now all my settings are at 0 except idle. That is at 2 because it was staying completely lean while idling.

hey man im from pa too i live in cranberry.and theres no emissions here cuz its butler county. what county are u in and ill tell u if u can pass or not but thats only if u give me a lil ride in ur vr-4 :evillol:.lol

GreekPower, I'm in Westmoreland county. I'd be willing to give ya a ride as soon as I can get it tuned so I'm not runnin super rich all the time.

well man u aint gotta worry theres no emissions in westmoreland only allegheny county has them so dont move there or else ull be fuk'd.so its all good and i think with the atr downpipe i think it eleminates the cat's so still ull be fine just have it tuned with the datalogger and ull be fine.peace

Nah, cats are what keeps you passing emissions...the ATR downpipe does eliminate the main cat...if you try and pass emissions without one...you will fail. I will be running the ATR downpipe and no cat until emissions, then I will saw it down and fit a hi-flow cat in there.
So Greekpower...you're in PA and they don't have emissions?
wow, I always thought it was a state-wide mandate, not county-wide...you learn something new everyday.

well no theres some places in pa that have it but if ur like in most countys other than allegheny u wont have emissions.but thats only in the western part of pa near pittsburgh i dunno about middle or eastern pa

Westmoreland definitely has emissions testing also. I just had it done not too long ago. I had been planning on keeping my precats and cutting off the ATR so i can use one of the high flow cats. Would that still pass emissions if I got everything warmed up before testing?

if you still have your precats and a hiflow cat, you should pass no problem, even without warming up.

o srry 93pearlvr-4 my aunt lives in westmoreland and i called her and she said there isnt i guess shes wrong.sucksfor her too cuz she owns a dealership in westmoreland.lol