2.3 whipple gen2 3.25 upper only = 11lbs of boost?

[svtaddict]

My cobras making 11psi with a gen 2 whipple and 3.25 upper only. Its making 549up and 509Tq. Its been running decent but from I've read. I probably have the lowest psi for that size pulley compared to anybody else. Haven't found any boost leaks or anything. Opinions?

 

[jbou91]

Belt slip? Power seems great for 11psi, should be at 14-15 I believe though.

 

[oldmodman]

Yes. The 3.25 should be giving you 14/15 in good air. 3.0 was giving me 17. And my 2.8 was giving 19 at the beach.

And these numbers were with the Gen 1 Whipple 2.3

 

[Rich'sTRsvt]

Do you have full length headers? That can lower boost some.

 

[svtaddict]

yes i do i have longtubes off road x and stingers

 

[whitedevil95]

Can you post a dyno sheet? Was your boost steady all the way to redline? I am on a very early whipple 2.3 with a 3.0 pulley and made 15.4psi which i think is right for the earlier Lysholm rotor unit. I know on my sheet you can see the boost is like a flat line 15.4 from like 2,800 all the way to 6,500.

 

[c6zhombre]

how are you measuring the boost? are you sure thats 100% functioning?

But considering how opened up your exhaust is, it's definitely time to go with the 3.00" upper. Soon to be followed by an E85 tune with a 2.6" upper! You'll get some boost then! lol

 

[TRBO VNM]

Something is not right somewhere.

the 2.3 came standard with a 3.5" pulley. the gen 1 made 13# and the gen 2 made 15#. Long tubes won't drop it much. At most 2# and typically I only see about 1#. Plus you are running a 3.00 pulley, so you should be closer to 15#.

how is boost being measured?

 

[PWORLDSTANG]

That is a 17lb pulley you have installed. I've run the same one and pegged my gauge consistently at 17lbs on that pulley. How exactly are you measuring boost?

 

[svtaddict]

tuner hooked up a boost gauge straight to the engine

 

[svtaddict]

If my intake manifold gaskets were leaking would it still idle and run fine? Or should I pull the blower and check?