RacerX Intake Manifold/Fuel Rail tips and tricks
- Thread starter christian4917
- Start date
christian4917
Member
Yeah not sure what had an impact on fuel efficiency. Was getting 33 mpg average with intake, exhaust and tune. Now im getting 30 average. My guess is bigger injectors? It is worth mentioning i have a small leak on one of my fuel fittings. Ordered a new one so hopefully that helps a bit.
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Tormach
Member
Did you remove the two fitting that where on the fuel rail and re-fit them with thread sealant.
I used ARP thread sealant(see link) and o-rings rated for gasoline applications where I could between fitting connections.
https://www.jegs.com/i/ARP/070/100-9904/10002/-1
I didn't upgrade to the 42# injectors yet, fuel pressure is at 42-44psi on my ultragauge before and after.
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Tormach
Member
Haha, ya it is alot easier now to chirp tires.. especially in 1-2. Enjoying how the power is coming in now, feels like this is what the car should have been or at least what the RS style should have been like.
Ya, for me this is all a built-up to a big turbo swap.
I def think at this point I need to final get the 17x8 or 17x9 wheels I've been looking at. The stock 16x6 with 195/65/16 might have to small of a contact patch to the road. Also wonder how she's going to play in the winter this year.
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UltimaSanctus
New member
I have 17x8s and Bridgestone RE-71R's and with intake, turbo-back exhaust,and a tune the tires only slip slightly when I'm pushing hard through a turn in 1st-3rd. So she grips pretty damn well
Mincemeat90
Member
I just installed mine and it wasn’t too bad. Maybe 4 hours. But to get those bolts on to the head I just jammed my arm underneath the manifold from the passenger side and it worked perfectly. The only thing I have an issue with is the TB position. With the zzp intercooler I had to move that charge tube so much that the fitting on the bottom came off while I was driving. And now it rubs real hard on the transmission. It’s really annoying. Been thinking about getting a soft charge tube for the top part
christian4917
Member
Yeah I had wrote in to ZZP about that and they said they haven't had any issue on install on those same mods but I had to put the top coupler on SKETCHY to get it to all fit. And wouldnt you know it, I blew it on a 20 psi pull 
But I looked on ZZP the other day and there is a throttle body "kit" with a spacer and the upper hard charge pipe and it looks like that pipe is bent differently? Wonder if that would angle it properly. I would try it myself but a city worker totalled mine a while back 
But I looked on ZZP the other day and there is a throttle body "kit" with a spacer and the upper hard charge pipe and it looks like that pipe is bent differently? Wonder if that would angle it properly. I would try it myself but a city worker totalled mine a while back 
KatSeagull4.7
New member
It's about the same. Maybe a little more awkward. I did have to loosen all the couplers on the pipes to get the angle just right.Yeah I had wrote in to ZZP about that and they said they haven't had any issue on install on those same mods but I had to put the top coupler on SKETCHY to get it to all fit. And wouldnt you know it, I blew it on a 20 psi pull
