Before I start, I appoligize in advance if these questions have been asked before and or fairly common knowledge.



This is my situation. I have recently purchased an 87 Tii. It had full 3" single with borla muffler, K&N intake, coils and plugs. I did the TB and ported it. Ported the wastegate and made it close properly were it wasent before, this made a big difference on the low end boost. I am getting around 7 to 10 psi at 4000rpm on the stock turbo, I was very surprised. Because I dont have a boost controller or any fuel mods, Im starting to run into detonation at 4500rpm+, and sometimes less.



What I would like to do, is get a fuel pump, fuel regulator, secondary fuel rail and injectors. But to get bigger injectors, you need some way of managing them, dont you? I dont want to spend the big money yet on a standalone unit right now. What would the best Fuel management system be that isnt too expensive. And are fuel management systems easy to install and program yourself? Also, intead of getting the bigger secondaries, could I just use the fuel regulator to up the fuel flow so I dont detonate?



Thanks for your input.



Dan

Its been a week and no replies, I guess this is general knowledge or just is asked a lot. Could someone be so kind as to direct me to a thread then please?



Thanks.



Dan

its a long answer?



well bascially it sounds like you want a big fuel pump, larger injectors, and something like a super afc, which should work fine.



a big fuel pump is fine on the stock ecu, and it sounds like you may need it now



the super afc intercepts the airflow meter signal and you can use that to control larger injectors (to a point) and installation is about 10 wires tapped into the existing harness



to do a real standalone is a bigger job as you have to setup their harness and then map out the whole car

This helps, thanks for the input.



Now, is there any point in going with the ridiculasly sized 1600cc secondaries. This to me seems like overkill. Im planning on doing all engine mods so that I will be able to drift efficiently. So, Im thinkin' I dont need any more than 1200cc or so secondaries, cause I wanna be runnin' around 15psi of boost on a quick spooling turbo.

Well you need to plan accordingly for how much power you are going to want. I would say that you will get bored of the stock turbine pretty quickly on a FC. However for now if you are just going to turn the boost up and keep the turbine stock you could put 720cc injectors in the secondaries. That will give you enough fuel for around 300hp. Using a S-AFC you can control the fuel enough for that setup. Also even if you use a compressor upgrade those injectors will support that as well.



Honestly though I would reccomend using even larger injectors so that you have headroom in the future for power mods. Injectors are almost all the same price, not more that 50dollars difference between 720 and 1600cc injectors. So if you buy small injectors there is a chanve you will spend money later for even larger ones. This happened to me..... So I say build a foundation for the future with overhead for safety as well. This will make the car easier to sell someday as well.



Definatley get the fuel pump.....again foundation for the future. I would go ahead and save money for the standalone as well, you will probably want that someday but the S-AFC will work good for you in the interim.