I have a 03 S, I just installed: j's racing header, j's 70rr ti single exhaust, exedy hyper single clutch, the comptech s/c with aftercooler and a 7lb pulley upgrade. I'm taking the car to get tuned, I have bought an AEM EMS for the car (recommended by the tuner) and now the tuner has also recommended bigger injectors. I want to know if the larger injectors are necessary or are stock injectors ok to use with the AEM EMS. They plan to eliminate the Comptech FPR and use the larger injectors in conjunction with the EMS to regulate fuel pressure. I was told this was the proper way to set this up. If the larger injectors are the way to go-fine but damn this is getting expensive. Anyone agree with this set up?
Let me also say this, the tuner I am using is a very reputable. I'm just wondering if I'm going over-board here.

 

with just a 7 lbs pulley you dont need the EMS or the bigger injectors. stock setup is just fine you just need to tune up the FPR. Now if you go with a smaller pulley and bump it up to 9lbs or higher you will need the EMS and injectors to run it saftley.

 

That said, there is not much point in spending all that money on an AEM and then still using rising rate for the fuel. Spend some buck on injectors for peace of mind.

PS> I've got some 550s for sale if you're interested.

 

if you dont want to up the boost past 7lbs. than you dont need any of that.

 

yes you're right, it IS very costly.

if you're going to stick with 7psi, then you dont need the ems or the larger injectors.

however, you're probably going to up the boost later on anyway given you already have the ems. so you might as well get the injectors for just a bit more. that way you'd have the complete package.

 

Ok, I guess I'll be getting the larger injectors as well, because I'm pretty sure I will be going to a smaller pulley sometime at the beginning of next year. Thanks for all the input, makes sense now. Anyone know what kind of #'s I might see with this set up?

 

Just go ahead and get the bigger injectors. Boost is addicting and you will eventually want to go a 15lb. pulley .

 

if the sotck Comptech with AC runns leans at 5.5 psi... maybe 7 psi is to much for the stock injectors and just a FRP