[Retrax]

I would not bother with a spacer unless I was running nitrous. Even then I would probably have my lid plumbed with spray bars and still skip the spacer.

 

[Ned4speed]

That's a bad question...many variables could almost sway you 50 rwhp....

Sent from my Nexus 5X using Tapatalk

Understood, either way hoping for high 5s low 6s.

 

[larry arizona]

Damn no shit wow!

What you think I'll make to the wheels?
2.45 upper
HX with trunk tank and two pumps in series
Zl1 lid
ID850s
ARH headers catless x pipe
90mm ported TB
Corsa CAI
And custom tune

580's in an auto, 600 in a manual on a dynojet.

 

[tabio42]

From English Racing-

Nice gains from my 5/8's lid spacer. Over 20hp in the curve 10hp peak.

https://r.tapatalk.com/shareLink?ur...ers.com/forum/showthread.php?t=9673&share_tid=9673&share_fid=26867&share_type=t


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[Lt1z]

I always go with the ZL1 lid unless a customer shows up with a spacer. Still never sure if the spacer does anything since multiple mods are installed at once.