Ive got the TSi kit and purchased a intercooler for it. Im going to be running 6psi intercooled and going to get to wild. Im thinking ill be able to get away with using an FMU 10:1 and walbro 255. I got a EGT gauge to watch the air/fuel mixture. I need some help and input!!!!!!!!

 

Are you using stock injectors?

 

an egt isn't going to really show an accurate representation of air/fuel, you would need a wideband for that. egt is good to see what kind of heat your putting down tho, i believe aluminum melts at 1,600 degrees. most turbo lancers i beleive are running a little over 1,400 at WOT. that sounds like it should be ok for fuel if your going to use that FMU and a 255.

 

stock injectors will be fine for said setup. 8 psi and up id think about getting at least 370cc, depending on how crazy your thinking of going eventually.

 

You do know over 50% (possibly 90%) of all DSM'ers don't use a wideband. An EGT is good enough for the job if you upgrade your injectors. Then again, I don't know how lancer guys do it w/ stock injectors when mirage owners immediately jump to bigger injectors with right impedance after years of no-no of cheaply using wrong impedance injectors from a dsm.

 

if u want to be like a ricer and just have the AFG....dont get wideband. If u want a functional AFG get wideband. I would defialty get one for aftermarket Turbo. A/F is can tell you A LOT on how the car is running and u want a accurate reading.

 

Thanks for the imput so far. I want to stick with the stock injectors. So i need to go with the Eclipse 2g pump from walbro? Also, what about my timing should i retard it at all. I probaly wont have to with an intercooler will i? Unless i get detenation.

 

If you are running that low of a psi intercooled and tuned, you wont need to worry about retarding your timing. Like bahamut suggested, this scared mirager recommends upping your injector size. With a turbo setup there is no such thing as too much fuel being a bad thing. Too little now, we have a problem, esp. when yo uget to higher psi's and are extending past the injectors' effective duty cycle. Other people will tell you different but this is my recommendation.

A nice 1:1 FPR like an Aeromotive, SX or Paxton, some bigger injectors, and of course some sort of piggyback fuel controller, Wally 255 or just a regular 2G Eclipse turbo fuel pump... of course the prerequisite monitoring devices, like a boost gauge and def. either a GOOD EGT gauge or a wideband air / fuel or both.

 

if you're sticking with stock injectors and stock fpr, the fmu with 10:1 might be enough, but you should buy the 12:1 disc in case. the 10:1 should hit the money for 200 crank hp. you should upgrade the pump tho to maybe the 255 because i'm not too sure if the stock eclipse pump can dish out enough fuel at 98 psi(of fuel) because of the 10:1 fmu.

take a gander at the fuel worksheet in the turbo lancer forum.

 

What does being a ricer for having an AFG instead of a wideband? To me, it's cost effective for guys trying to go over 350 to 500 and beyond whp. Under 15 psi, I don't think anyone here will be serious enough shooting for those #'s. Otherwise, I can point you to a bunch of DSM'ers in the high 12's not using a wideband.

Well, for the Evo guys, they just have TONS of money to toss around everywhere . . . they are the modern Supra TT owner.

Wideband = luxury item that you don't really need. It's an option, not standardized tuning must-have.


As for FP, I do believe the 2g DSM FP can be rated up to 280 flywheel HP or around that area (don't quote me on the figure) while the walbro 255 can support over 500 flywheel HP. Why spend 90-120 bucks to get under 250 flywheel HP and under utilize the FP's full potential?

 

I don't even know the fuel line can take that much psi skyrocketing towards 100 psi.

IMO, in the long run, you'll wear out the injectors. It's like overworking your heart.

With bigger injectors, the load isn't all upon the injectors. There is room to grow for bigger HP.


It's pretty much known to get 550 whp = you'll need 850cc or bigger injectors.

It's like saying a DSM w/ an Evo 3's 16G is still running 450'cc but jacking up the FPR. Or the Evo 8 dropping their injectors to 450cc . . . you'll see tons of exploding Evos on the road. Just ask the Evo 8 guys if they are willing to drop to 450cc and cranking up FPR.

 

yeah. with a 10:1 fmu it's should be 98 psi. (6psi * 10 ratio + 38 stock pressure = 98 psi) so with the 12:1 that RRM uses, thats 110 at 6psi, 122 at 7psi, and so on...

so really that's my only concern with the gsx pump. whether it could still deliver at 98+ psi. i guess our fuel system is pretty good taken that, i guess, a great majority of RRM kits are still holding up after 2 odd years. but i would still opt to be on the safe side with larger injectors.

 

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

Here's some tech FP stuff from the 3KGT and clone guys.


http://www.roadraceengineering.com/f...pflowrates.htm

Here's RRE/RRM's info from RC Engineering.

Before people say that my presented info is a bunch of BS, please feel free to email your criticisms to the 3kGT owners and RC Engineering on their R&D, not me.

 

Im not really looking forward to replacing the injectors! But could i get a set off of a eclipse turbo or something like that. What size should i get? I really dont want to do them but i dont want to pop the motor.

 

the bottom line is stock injectors will be fine for up to 7 psi. for sure. no problems. anything above 7 i would up them. walbro 255 will be more than enough as far as a pump is concerned. as far as info being bs, i dont know if anyone is saying that. the only thing i would say is i would not want to use my EGT gauge to tune with. bottom line. i also would never use a narrowband A/F gauge to tune with. if you want to tune, (standalone, PB software, whatever) i would either have your dyno hooked up with a/f readouts, or i would get a wideband. i think the guy that started this post isn't looking to go past the known limitations of the motor, so EGT and Boost gauge will be fine.