Fd3BOOST

Nope, it does not matter which way you run it. You can run into either the secondary or primary first. Either way works. It also does not matter which way you run the lines. Either from front to back or back to front.

GreyGT-C

i ran my fuel rails in parallel... use a Y-block before the rails and then use both ports on the FPR.



uses pretty much the same amount of hose and fittings either way but provides a more consistent pressure to both rails as far as i've been told.

Fd3BOOST

That is the way I had mine set up last time, parallel. It takes about 4 more fittings not including the Y block to run them that way. I asked Ray Wilson over at PFSupercars if I could run them in sequence instead and he says that is the same either way. Which ever way floats your boat, The FPR will keep the fuel the same in both rails. There should be no pressure drop.

I just wanted to share that I had gotten some professional input on it. The reason I went this route was mostly for a cleaner instal. It definitely is less clutter to not split the feed line.

sen2two

so my new problem is that the injectors i have do not fit.



i bought them from google.com. 2 1600cc and 2 1000cc. the 1000's do not fit into the core, block, housing...whatever you wanna call it. i remember something about having to use the FC grommits or something like that. did yours just fit?



and the 1600's dont really wanna go in easily to the manifold. is there somehow i have the wrong injectors???



also, the O-rings on them are huge. they do not fit into the rails. should i just get some randon o-ring from a parts store and make it fit?

Fd3BOOST

I don't know what you have. I am using the stock primary 550's. Which is plenty for what you want. The secondaries I am using 1680cc. Mine fit fine. I am using some spacers made by Dave Newbern. I use 3/8" fuel hose for an outside insulator too.

sen2two

hmmmm....i did see the spacers for sale on there. maybe thats what i need. but not sure where they go or what they do. i try to call them almost everyday. but no answer.....



my injectors are bosch 1000cc and bosch 1600cc from here...



http://www.google.com/Fuel_Injectors_s/90.htm

sen2two

stupid links never work....



google.com and i have the bosch ones on the top left.



and the spacers they have there are for the LIM for 1600's.



the 1000's look nothing like the 1600's. but there the same in the picture. im probly just gonna have to get in contact with them somehow.

Fd3BOOST

Are you planning on using those 1000cc for primares? If so you should expect to have a rough idle. I originally had 1000cc primary injectors in and my tuner said it would not be possible to get the pulse width down small enough to fix my somewhat lumpy idle. This was after he worked on it for about an hour. I don't know what you plan to do with the car but anything under your going to drive on the street making around 500hp or under the stock 550cc is plenty of injector.

I am using AEM stand alone which has a fairly high resolution fuel map too. However the 1000cc is pretty large relatively speaking so your only going to be able to shut it down so much.

I'm not one to tell you what to do with your car but I have been down that road. If your building up a street car or even a light duty track car I would stick with the stock 550cc primary injectors.

sen2two

hmmmm......i dont wanna make mistakes that can be avoided. and i would hate to pay a tuner twice because i have to swap injectors. im using an apex-i PFC. the stock 550's are side fed though right? i need top fed for my fuel rail.



what about some 850's though? i also would hate to have to buy 3 sets because my 1000's are to big, and my 550's are to small. im gonna have a medium to large size port on my REW. thanks for the help big time too....

Fd3BOOST

I had to do some research here since my memory isn't the greatest. Ok from what I could find your right. The stock injectors are side feed. Do you rown checking though to confirm that. I am using 550cc top feeds so i assumed that the stockers are top feed. Like I said it's been a while since my car was stock so i tend to forget details. However I had about as large as a street port as you can go without breaking through the waterjacket. Like I said 1000cc primary is way more injector than your going to need. I don't know how much boost you plan on running but I doubt your going to max out 1600/550 combo. If you want run something bigger go right ahead but it might be at the sacrifice of a smooth idle. I know from my own experiences that 1000cc primaires are not ideal. Whether or not 800cc's will work well I can't say one way or the other. You might want to speak to a few guys using that combo It's the secondary injectors that are carrying most of the load of the fuel delivery under boost. The primaries just dont need to be that big. Why do you think most people only upgrade the secondaries. If your having doubts then you should call your tuner. I guess your using Pettit since your in Florida? See what they recommend. I would bet they are going to agree with me.