DIY 18' manifold swap into 15-17'

DHs550 said:

Spliced the pigtails in. I’m going to go back this weekend and make sure they’re in the right order

Click to expand...

More than likely you got a wire crossed up or a weak solder joint.

S550MG said:

More than likely you got a wire crossed up or a weak solder joint.

Click to expand...

My money is on wiring messed up since he's getting a code for both sides.

EODTech87 said:

My money is on wiring messed up since he's getting a code for both sides.

Click to expand...

Good point

17 model year is different vac line routing.

If locking out the flaps and turning off in the tune, is any rewiring still required?

SNOOPY said:

If locking out the flaps and turning off in the tune, is any rewiring still required?

Click to expand...

No. You will just have 4 plugs that are left unconnected.

Thanks

Do you have Dyno results for the OP install?

Mdavis.geo said:

Do you have Dyno results for the OP install?

Click to expand...

Not yet. I did a before dyno with only CAI and exhaust and put down right at 390 wheel. Now I’ve added the 18’ manifold and Lund flex tune so we’ll see what the gains are. I’m not sure when I’ll get back to the dyno but it’ll be in the next few weeks. I’m hoping for 440-450 whp.

What changes when you are using lockouts. Do any of the vacuum lines change. I know you cap off the back vacuum line. Just what goes on up front differently?

The vacuum port in the back is just a pass through to the vacuum port in the front. You can leave both those ports alone and block off the port coming from that distribution block instead.

EODTech87 said:

The vacuum port in the back is just a pass through to the vacuum port in the front. You can leave both those ports alone and block off the port coming from that distribution block instead.

Click to expand...

Is there any way you could do a schematic for this? I just switched to the lockouts and wasn’t aware the vacuum lines changed

DHs550 said:

Is there any way you could do a schematic for this? I just switched to the lockouts and wasn’t aware the vacuum lines changed

Click to expand...

The vacuum 1 ports on the front and back of the intake manifold can be left disconnected and uncapped as they are interconnected with one another and nothing else.


You can remove this piece and cap it or leave it on and cap it. This is what supplies the vacuum to the IMRC which are being deleted.

Can someone help? Does this look right for a Vortech/paxton car with no IMRC? Do i need to add the 4 port check valve? Got my boost reference by T ing the brake booster to manifold port. Thanks in advance

So if you lockout the imrc do you still connect this to vacuum 1 or would you cap it off