Hey guys,

Hoping you could advise on me which turbo to go for.

SC46 or MD321T

This will be going on a MY03 STI Type UK

I've got GT spec headers with Harvey Up pipe
RCM intake
Full decat exhaust 2.5
Hybrid front mount
uprate inlet pipe
Opensource map with Duncan @ RaceDynamix

I just don't know which turbo to go for lol

Kind Regards,
Steven H Gill

 

which ever you go for you are going to need uprated injectors too, and does the car already have a walbro fuel pump? 3port boost solenoid would be a good move too.

Simon

 

 

Steven - got a second hand SC46 going pretty cheap here if you want.... gimme a bell on my mobile if you want it as I am out and about for the next couple of days.

 

Simon/Duncan, Does the PPP come with a 3 port? and if not what benefit would i get fitting one (same spec as above minus rcm and a TMIC)? im sure ive asked this before but cant remember the answer

Thanks

 

Ppp is still on 2port.

Not sure if you mean adding a 3port and using the ppp map still which is a no no, or adding 3port and a remap to ppp car - worth it but 2port in newage sti works very well.

Simon

 

Sorry it was a vague question. It would be + remap running a 20g with 650cc injectors on a ppp 02 sti.

Excuse my ignorance and i'm sure if I searched I would find an answer but while i've got your attention what exactly does the boost solenoid do and how exactly would it benefit from being a 3 port?

Many thanks,
Andy

 

sorted now (did a search)

 

3port more essential then.. cars no longer a ppp really etc..

controls the wastegate to control therefore the boost level via the actuctor.. more air pressure on the actuator the lower the boost.. a 2port always allows a little pressure on the actuator.. 3port is able to allow you to put no air on the actuator so it spools nice and then as much as is available so the boost control is a lot more precise.

Simon

 

ahhh so a must for a 20g then. would you recommend a particular brand?

 

Any 3 port should work fine.

 

What size injectors would i need?

 

Cool thanks.

Ive gone for 650cc but I guess its just how much future scope you want, Simon, Duncan or Mark will confirm im sure.

 

Duncan's the man, he knows the car, I used a 3 port of a classic Andy.

 

You would need at least 650cc for this but 740cc or 800cc will be fine depending on what you can get hold of.

 

btw - turbo provisionally sold

 

Thanks Ducan! u da man! :d