GLoBaLReBeL420

Anyone switched over to the new 258's that Tomei is putting out? I recently jumped over to them and am noticing some pretty crazy vacuum drop at idle. With the stock cam-shafts I was pulling -20 to -21(at sea level in Cali) no problem. I just switched over to the 258's and I'm barely pulling -14 now at idle. I had to bump my idle up to 950 rpms just to keep her stable.

I haven't had a chance to dyno her yet, but I feel like she pulls WAY harder up top 5K+ but I lost a ton of torque down low (3500-5K). Just seeing if anyone else noticed the same issue?

SR20DET S13 Blacktop
Tomei 740cc injectors
GT2871R (.64AR)
SS headers
Z32 MAF
ACV-R Boost Controller @ 1.2 Bar
Walbro 255 FP
Fuel at 43 psi no vac

Any input is greatly appreciated..

Already tuned with NisTUNE