Alright guys, here's the deal. I am a complete boost newb. I've stumbled across a turbo kit that was reasonably priced, so I'm goin for it. Since everything I've done in the N/A realm has been a result of the wonderful advice and input I've read on here, I figure I'd ask you all for some advice. Basically, almost everything was included in the kit that I'll need, and I'm at least "mechanically knowledgeable" enough on how to put things together, so I'm not too worried about the physical installation (plus I've got good ole' Corky Bell by my side). What I am a little nervous about is the tuning side of things, since no piggy-back or any type of engine management was included.

Here are my questions, and I'm sure many of them sound stupid, but I had trouble finding the answers even though I'm sure they're here somewhere. Can I reach 8 psi (my goal) on a stock motor without any sort of serious tuning/modification? The ecu cannot handle any sort of boost on its own can it? I've also heard I may need bigger injectors and possibly a larger fuel pump. Is this true for 8 psi? If you guys do suggest doing it on my own, what sort of tuning device do you recommend to remap the ecu? I've checked haltech, AEM, etc and am not sure which is the best for what I'm after.

I'm only asking, because the local speed shops are wanting quite a pretty penny to put it on and tune it, even though that's probably the route I should go to ensure it gets done right. I've just always taken pride in modding everything about my ride myself, and so if it were at all possible to do this on my own, I'd rather do that and have first-hand knowledge on how it all works.

Sorry for the long posts guys. fing02.gif fing02.gif

 

8psi on stock fuel is impossible.

I did 5 without any fuel modification what so ever and it boosted just fine with a relatively healthy afr for 93 octane.

Youll need some sort of piggyback for 8psi, maybe 400-500cc injectors to leave some room for growth. You can get away with a larger fuel pump and an ADJUSTABLE rrfpr (not an FMU). but its not the best way to tune and not very safe over 8.

Youll be fine with the pump and the fpr if you go piggyback and larger injectors for low boost, but too much higher and youll need a bigger pump (195lph can work with the stock fpr) and aftermarket adjustable fpr.

get readin'

 

+1

I suggest go with a piggyback, either an Apexi AFC of SMT-6 since these install pretty straight forward, relatively.

Then maybe go with larger injectors + at least a fuel pump with at least 190lph rating (you can find these pumps on junked JDM Evos). And I presume you are going to get hooked and might want to turn up the boost later on fing02.gif , so personally, I'd go with 440cc injectors and Walbro Fuel Pump.

Mine was fine up to 12 psi, with T3/T4 440 injectors and 255lph pump plus SMT-6.

 

Here's another option you might want to check out. I have been running one on my 05 Beta II Tib for about 6 months and it is working great, long term fuel trim is staying at .07%.

I have the Alpine SC kit on my car and wanted to get rid of the Unichip piggyback and the 5th injector for something I could get tuned locally I was considering going to a secondary fuel rail when I found out about the AEM FIC. It uses a different method to control the injectors, it changes the injector signal pulsewidth, and I am running a set of 34lb LS2 Chevy primary injectors. The FIC cuts the injector output back to the same as the stock 190cc injectors for NA running and the ECU stays happy. The car starts, idles, and drives the same as it when it was stock. The FIC has an onboard MAP sensor and you add the fuel you need when running under boosted conditions. The FIC can retard timing but doesn't advance it. It also lets me control the AF ratio when running in low boost closed loop conditions. It was easier than adding a secondary fuel rail and the cost was less. I don't know if it has been tried on a Beta I motor yet, sooner or later someone needs to find out if it will work.


http://www.aempower.com/ViewCategory...CategoryID=116

 

hey thanks for all the input guys. I'm hunting down the bigger injectors as I type, with the new pump soon after.

I've actually been looking A LOT into the SMT6, but I'd never even thought of checking apexi. There website has the new "NEO" system listed. Here's the link: http://www.apexi-usa.com/product_electroni...0&pageNum=1

It's also fairly cheaper than the SMT6, which is why i'm interested in it. Can anyone tell me if it has the same features as the SMT6? Which is "better" for what I need to do? This is certainly one part I don't want to cheap out on, so any advice/input/comparisons would be a HUGE freaking help.

I forgot all about having to run a higher octane fuel. Thanks for the reminder Alex01.

Oh and where's a good place to get boost, a/f gauges and the like?

Thanks a lot fing02.gif

 

nvm about the gauges, just found several places. All seems to be in order. Is it true that you can run up to five psi of boost before you actually need to tune the injection? Can all the systems handle it?