:

 

And go price a New Garrett GT 3742 with Vbands,ceramic bearings and polished housing

 

Is that the turbo you would buy?? It took you 2 hours to find one and that's the one you would put on YOUR CAR???

 

I don't see a gt3742 on Garrett site??

 

Ten years ago people were not doing 3.5-4" intakes..

Maybe 3" piping to a stock MAF housing. In that case OP would be fine with stock injectors.

 

I wonder what the hp gain difference is from a 3 inch compaired to a 4

 

Max boy sorry for the autocorrect mistake of your name earlier in thread. Anyway you just love stirring the pot don't you?? Go with whatever injectors you'd like but use the search. There were more than a few that have run in the area of 5psi of boost on stock injectors. There's a formula floating around somewhere on how to calculate hp/injector capabilities. Iirc 325hp is the max on stock injectors. That's quite a bit of power for n/a on our cars. Not sure without serious motor work or fi you could make that power. On top of that go with bigger injectors and then you need fuel pump, for most of them.

 

You have a point though i was actually thinking about boosting it but i have an auto and i dont know if it will be worth it....

 

My car is auto. Look into the transgo hd2 shift kit. Even if you don't boost if your into putting power down this is what you need for your auto. Makes a huge difference in these cars. Top 3 of the modifications I've made. A must do for boost. I think a must do .

 

Wow i never new about that im definitely getting this!

 

If done right it's really the best thing you can do for the money on an auto.

 

So whats a shift kit really do shift smoother? I hear its a pain in the but to install

 

you’re correct about what you’re saying about you can get quite a bit in gains from bolt one and even if you do a turbo you still may have to upgrade internals and a turbo kit alone is atleast a couple thousand. And you don’t get just 3 here 5 there in gains with bolt one. Headers alone can add up to 20hp. What I would do if I were him is upgrade to 3 inch exhaust and that will help with air flow. It may not be necessary but it shoukd help some.

 

10 year thread revival. not bad necrobot but ive seen better.

 

Lol savage thread back in the day, for sure bolt on prices are high, but so is pricing a custom turbo setup. With performance shop prices anywhere from 200-300$/hr labor alone is gonna add up quick.

The fighting was cute tho lol

 

If you are going to use the stock ecu then run stock injectors!

Opening up the intake and exhaust will let the engine pump air through itself a little easier which will make the default fuel map a little lean. The ecu will detect the lean condition via O2 sensor and compensate by holding the injectors open a little longer resulting in more fuel. This is what the ecu is designed to do.

When you put in higher flowing injectors you are throwing the default fuel map out the window. The ecu now has to hunt around a lot more to lower the injector pulse width to bring the a/f mixture back to a stoich mixture. If the injectors are way too big it will lower the metering resolution of the ecu in low flow situations (idle) decreasing performance efficiency in this range.

The only time you need bigger injectors is when at max rpm and WOT the an injector duty cycle of 100% (open all the time) doesn't supply enough fuel to maintain a stoich mixture. Although headers and a bigger intake will allow for a bit better air flow the passages in the head and valves hasn't changed so the air flow isn't going to be a massive increase without a pressurized intake (turbo charge/super charger).

Bottom line: When you get to the point that you need larger injectors you have gotten to the point where you need a custom programmable ecu with a proper tune for the engine configuration.