*General* FAST LSXr 102 thread
I have an ultra z hood (LT1 body with LS1) and this filter would be perfect as long as it accommodates 4"'s of air flow...
Thanks!
If you find one let me know and post some pics of it please. thanks
I am depining the stock PCM for sensors that I am not using and was wonderign if I could tuck the TPS, IAC, IAT wires under the mainfold to clean up the driver side of the motor?
any thoughts?
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You can assume that, plus 25. for intake gaskets
And Some FYI people.. Jegs has the FAST 102 LSXr fuel rails on sale at $166. Just got a set (Finally) and some Super sweeet (Napoleon dynamite) red and black Jegs AN fittings. Gotta re-do the x-over line. It's rubber = nono.

But this intake will out last almost any future modifications. It should never become a weak spot and will work with anything. ie; heads, engine swap... Spray... FI... Who knows.
Last edited by bayer-z28; Jul 10, 2011 at 10:00 AM.
Just for clarification.
Just for clarification.
The main thing was that I needed the black "bell" to be the same diameter as the LS1's, and thats why I bought it.
I bought mine on eBay and since it all came as a complete package (pump, stat, gaskets and housing) it made life easy. All I need to find is a new 160 degree t-stat to use. There's also a big write up on LS1.com about this same issue, but the guy found the right part number for the t-stat.
And the only reason I bought this pump is because the rear cover is pressed on and not bolted on (like the LS1 version), hence the "hump" missing on top, which is where the rear cover bolts to the pump.
Did that make sense?
And i could be wrong, but that's what we searched and found out. I have a couple of quick questions though.
1) I have already moved my Oil Pressure Sender Unit from the back of the intake down to the filter housing boss. Which I would recommend to everyone as its a much better place for it. Anyway, as for the map sensor goes, when I get this intake I want it mounted in the front. Problem is I've heard many people refer to this and never explain where the hell it is actually mounted, any help?
2) I realize you have to get some skinny injectors, but one of the last pictures posted it looks like that guy has some 42 lbs Racetronix injectors and they seem to fit fine. Is it dependant on the type of rails you have too? For instance, if you're running LS2 rails you will need the skinny injectors, but if you run a custom rail setup you can get away with fat injectors?
3) I don't care much for the large 102mm opening though I'll bite the bullet and get a 102mm TB *even though its a bitch to tune*. Regardless, what I'm most irritated by is the fact that I spend this money to have a big 102mm TB thats a pain in the *** to tune, and at the end of the day no one offers a proper intake setup thats 100mm large. What the hell is the point of going through all of that trouble to make a 102mm TB work when you're stuck with a f**king 85mm lid or some variant infront of it?
Any help guys?
I have a couple of quick questions though.
1) I have already moved my Oil Pressure Sender Unit from the back of the intake down to the filter housing boss. Which I would recommend to everyone as its a much better place for it. Anyway, as for the map sensor goes, when I get this intake I want it mounted in the front. Problem is I've heard many people refer to this and never explain where the hell it is actually mounted, any help?
2) I realize you have to get some skinny injectors, but one of the last pictures posted it looks like that guy has some 42 lbs Racetronix injectors and they seem to fit fine. Is it dependant on the type of rails you have too? For instance, if you're running LS2 rails you will need the skinny injectors, but if you run a custom rail setup you can get away with fat injectors?
3) I don't care much for the large 102mm opening though I'll bite the bullet and get a 102mm TB *even though its a bitch to tune*. Regardless, what I'm most irritated by is the fact that I spend this money to have a big 102mm TB thats a pain in the *** to tune, and at the end of the day no one offers a proper intake setup thats 100mm large. What the hell is the point of going through all of that trouble to make a 102mm TB work when you're stuck with a f**king 85mm lid or some variant infront of it?
Any help guys?
2. I think it needs to be a "skinny" injector to fit into the FAST's lower shell. The rail should be an LS2 or LS2 style. If not, just take precautions to avoid fuel leaks.
3. If you look close enough, there care a few people who make 100+mm parts. I've got a FTP 104mm lid for now... (but we @ 6LE designs are designing our own 104 lid. We're even going to offer then in clear. But hey are pretty nice, and might even have a slightly better airflow design and a little more volume. )
Calloway, TSP and someone else even make 100mm MAF's.
There are even a few companies like TSP, FAST, Nick Williams and Godspeed that make 102mm TB's.
See, if you look around enough...or lurk around enough you'll find everything you're looking for.
Also some people have problem tuning the 100mm MAF. Ask JimmyP. He ended up going SD.
And the angle of the injectors was causing the rails to leak pretty bad.
And IIRC, but the low air-speed flow is a main issue on the larger MAFs. I'm thinking there may be an inconsistent flow past the element enough to get a solid correction factor to dial the MAF in. A screen or "Flow Straightener" would be an ideal addition.
And also, I think the ETC TB's are more of a bitch to tune than our cable operated TB's because of the separate IAC. But the MAIN thing I noticed is the 102 has near instant throttle response!








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