Hi guys, I'm thinking maybe to go turbo this summer and before to go too much far I've some question about this. I'm an mechanic so I know few things about engine fuel injection etc, but I haven"t experience with turbo stuff. I know how it works but I need your experience to show me the right way.

I want to built a custom setup. I think about an evo manifold fit on RA flange. I just want a small turbo, around 4-5 psi not more. I don't want big performance, i just want to be a little more faster...

My question is : Do you think the OEM stuff can be ok to ''support'' the setup. Do the injector and fuel pump will be ok for only 4-5 psi. Do I need to change the ECU for something like piggyback ? Does it change something for the oem MAF the see some boost because in real life it see only ''flow''.

I'll be waiting your comment and see what I will do with that .

 

just call road race, save you a lot of time and money

 

thanks, but it's not a question about saving time and/or money. It's to know what can be done and what cannot. I know RRM does one and I'm sure it's a great one. But I want to go by my way...

 

for 5 psi...just add mods NA u will go faster...if u really want turbo...then do it well...piggy,fuel pump,injectors,fuel rail and all the turbo stuff ya know...but piggy is a most have to be safe...

 

Evo manifold flange won't work. You'll need to buy a manifold made for the Ralliart, or build your own. You'll need to get more fuel to the engine by using either larger injectors or adding an injector. Either way, you'll need a piggyback ECU to control all of it. OEM MAF will work fine, but you need to place it before the turbo.

 

if you really want turbo you should do alot of research first. their are a few really good threads on this forum from ppl who did custom setups. i forget what its called but someone recommended a book with all the info you'd need for doing a custom setup.

 

I would talk to Modern Racer. He did a custom setup and did a great job. He would be able to answer most of you questions.

 

also try migueraliart. he knows alot.

 

Ok if you want to build a system just for 5 psi that's ok but the thing is that you might end up blowing up your engine ....

This are my recommendations:

Fuel and injection system: (Use something to control spark and fuel in one device) there are few piggys that aren't that expensive .... Perfect power smt-6(RECOMMENDED), Emanage ultimate, RRM piggy (please do not buy for 900)...
The smt-6 is simple to use and I have the installation manuals directly emailed from their tech department for our cars. It can modify ignition and fuel safely and it's easy to install.
Intercooler: DOn't do like idiots do, buying the biggest intercooler you can fit, intercoolers have a pressure drop and it increases with size. I can recomend the EVO intercooler holds up really well with huge amount of psi with minimal pressure drop. It always depends on where is located thou...
Turbo: Don't buy ebay turbos unless they are branded , honestly a 250$ turbo is not going to work propperly, if you can get one from a 2G dsm and change the inlet size to a T4 a turbo shop can do this and won't charge that much. Do not buy a T3 turbo(too small) nor a T4(too large unless you want to run big CFM). If you want just a 5 psi you might have some problems finding a turbo with an internal wastegate with that psi rating. You probably will get an external one.
Turbo Manifold: You can go LOG style for starters as you won't run crazy boost lavels. THERE IS NO MANIFOLD ON EARTH THAT IS A DIRECT SWAP . Have somebody build one for you and remember that it needs the wastegate flange.
INjectors: I am not sure if you want a 5 psi and then you want to change to a higher pressure (it's usually how it works) but I believe you might be reaching the capacity of the stock injectors ,, if you wanna change them use WRX injectors and or RC. don't worry you can adjust them for no boost conditions. As for the fuel pump for 5 psi you wont need to change it , but if going higher you will need more pressure.


IF you are worried about the MAF the greddy emanage can eliminate it building a map on the fly hehehe it uses the MAF reading and the stock MAP then build a map with these two and it outputs the MAF signal to the stock ECU using just the MAP so voila!! no MAF and the good thing is ZERO RESTRICTION on the intake...

 

man, M RALLIART,whats your problem with LSD...?

 

I thought i heard people saying that our internals can handle up to something like 9 psi. What does RRM run their kit at.?

 

if you want a custom setup then get a manifold from rpw or build it yourself or buy the entire kit from rrm.

 

thanks to everyone ! Migueralliart, thanks for your comments, do you know the price of the Perfect power smt-6 ?

 

ok instead of starting a new thread ill ask here:

with the RRM kit, im not enthusiastic about the 5th injector method, would it be relitively simple to just plug the hole where the 5th whould sit and switch to larger injectors and the ecu will still work fine?

also what are the benifits / cost of having and not having the MAF?

thats all i can think of now, but there will be more to come, lol
TIA

 

If you plan to use RRM's kit but not use the 5th injector method, they can supply you with 4 oversized injectors at a small cost, however u need a complete new tune