Freddy intake manifold vs stock - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Loomis112 · 07-04-2014, 07:50 PM

Hey all I got a redtop with a gt2871 on it and the previous owner threw on a Isis intake manifold.

I have the stock one sitting in my garage and im not really pushing anything over 260rwhp.

So just a couple questions..

I am wondering if it would be better to have the stock intake manifold back on there?

Would it help spool the turbo by not being a gigantic whale penis manifold?

Also I have heard the stock manifolds are good up to 400hp is that total bs or is there some truth to that?

Thanks for reading

jsu1012 · 07-04-2014, 07:58 PM

Is it tuned ?

Loomis112 · 07-04-2014, 08:00 PM

Only on an Apexi neo

So no not real its just a mild dd and occasionally I drift it

jsu1012 · 07-04-2014, 08:17 PM

I'm sure if you go back to stock you'll have to adjust the fuel.

Loomis112 · 07-04-2014, 08:39 PM

Yeah I could do that im just wondering if it would help? Maybe give back some low end?

Or does it even realy matter?

quickdiversion · 07-05-2014, 06:02 AM

The stock manifold will give you a little more low end torque carrier if the longer runners. I use a Freddy manifold but I made sure to gasket match mine. I had to cut out allot of extra metal and then my welder. Added as bunch of metal to the other side to be matched. It was a lot of work but I think it's worth it with the Freddy. I used it with my 2871r and now I'm using it with my hx35. Only other problem I can think of is running top feed fuel rails. It only had 3 mounting points, not 4

07-04-2014, 07:50 PM	#1
Loomis112 Zilvia Member Join Date: Jan 2014 Location: USA Age: 31 Posts: 213 Trader Rating: (0) Feedback Score: 0 reviews	Freddy intake manifold vs stock Hey all I got a redtop with a gt2871 on it and the previous owner threw on a Isis intake manifold. I have the stock one sitting in my garage and im not really pushing anything over 260rwhp. So just a couple questions.. I am wondering if it would be better to have the stock intake manifold back on there? Would it help spool the turbo by not being a gigantic whale penis manifold? Also I have heard the stock manifolds are good up to 400hp is that total bs or is there some truth to that? Thanks for reading

07-04-2014, 07:58 PM	#2
jsu1012 Zilvia FREAK! Join Date: May 2011 Location: Oklahoma Age: 39 Posts: 1,122 Trader Rating: (13) Feedback Score: 13 reviews	Is it tuned ? __________________ @streetstyle_jay

07-04-2014, 08:17 PM	#4
jsu1012 Zilvia FREAK! Join Date: May 2011 Location: Oklahoma Age: 39 Posts: 1,122 Trader Rating: (13) Feedback Score: 13 reviews	I'm sure if you go back to stock you'll have to adjust the fuel. __________________ @streetstyle_jay

07-04-2014, 08:00 PM	#3
Loomis112 Zilvia Member Join Date: Jan 2014 Location: USA Age: 31 Posts: 213 Trader Rating: (0) Feedback Score: 0 reviews	Only on an Apexi neo So no not real its just a mild dd and occasionally I drift it

07-04-2014, 08:39 PM	#5
Loomis112 Zilvia Member Join Date: Jan 2014 Location: USA Age: 31 Posts: 213 Trader Rating: (0) Feedback Score: 0 reviews	Yeah I could do that im just wondering if it would help? Maybe give back some low end? Or does it even realy matter?

07-05-2014, 06:02 AM	#6
quickdiversion Zilvia Junkie Join Date: Aug 2012 Location: nj Age: 42 Posts: 341 Trader Rating: (4) Feedback Score: 4 reviews	The stock manifold will give you a little more low end torque carrier if the longer runners. I use a Freddy manifold but I made sure to gasket match mine. I had to cut out allot of extra metal and then my welder. Added as bunch of metal to the other side to be matched. It was a lot of work but I think it's worth it with the Freddy. I used it with my 2871r and now I'm using it with my hx35. Only other problem I can think of is running top feed fuel rails. It only had 3 mounting points, not 4