Stainless Power Log

$149.99 

145 reviews



This product is currently out of stock.

Exhaust - Stainless Power Log
Exhaust - Stainless Power Log
Exhaust - Stainless Power Log

In an effort to put out the best possible PEMs we've researched and hit a wall. The problem lies in the front header piece. Opening the inlet as people are isn't doing anything because the inlets are already 1.53" (as big as the port in the head). The problem is the lower section of the manifold. It's 2" OD and 1.63" ID. At that section you're sharing with the other ports. Trying to exhaust all 3 front cylinders out of a single 1 5/8" pipe is crazy. It's no wonder so many people pop front pistons and have questionable gains from other PEMs on the market. The rear manifold and crossover aren't as bad. Notice the crossover is also 2" OD, like the front mani, but because it's thin wall you get 1.91 ID. So, the front mani is the narrowest section of the exhaust, giving you 2.09 sq/in of exhaust area. The crossover and rear manifold are up to 2.89 sq/in. So the front manifold section is over 30% smaller than the entire rest of the manifold network and it's the only section that guys selling PEMs aren't doing!

Fortunately ZZPerformance now offers a cost effective solution. The powerlog uses 1 5/8 primaries which feed a 2 1/4" pipe into the crossover. Uses factory mounting, so all the factory bolts and gaskets can be re-used. Excellent for use with our downpipes.

  • No loss in torque as seen with headers on the L36 engines
  • Perfect upgrade for turbo kits
  • Low cost
  • Lowers KR and keeps the front bank of pistons safer.
  • Quicker engine cool downs from eliminating the cast iron
  • Power log is 5 pounds lighter than OEM cast front!
  • Doing the front only gives great gains and takes less than 30 minutes!

 


Over 10WHP gained from the addition of the powerlog and no other changes!
I also wanted to post that I just went through my 1st full tank of gas after the plog (yes I drive a lot) and I have picked up a few MPG as well. About 35-40 miles extra to the tank on the exact same commute as before the plog.
Below is from another member who scanned before and after his powerlog install. Notice how much more timing is achieved and KR eliminated!
Stock front exhaust manifold scan below, as you can see some light KR up top.
Powerlog Added scan this is with the front 3 cylinders skewed with 2% extra fuel. I also added 1-2 degrees extra timing and raised my Base PE by .1 (leaner).
Over 10WHP gained from the addition of the powerlog and no other changes!
I also wanted to post that I just went through my 1st full tank of gas after the plog (yes I drive a lot) and I have picked up a few MPG as well. About 35-40 miles extra to the tank on the exact same commute as before the plog.
Below is from another member who scanned before and after his powerlog install. Notice how much more timing is achieved and KR eliminated!
Stock front exhaust manifold scan below, as you can see some light KR up top.
Powerlog Added scan this is with the front 3 cylinders skewed with 2% extra fuel. I also added 1-2 degrees extra timing and raised my Base PE by .1 (leaner).
The Powerlog and Ported rear manifold will support up to around 300whp, but for a goal higher than that, we highly recommend our Stainless headers.
Do not wrap these exhaust pieces as cracking can result. 
Exhaust - Stainless Power Log
Exhaust - Stainless Power Log
Exhaust - Stainless Power Log
Customer Reviews
4.8 Based on 145 Reviews
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MP
11/21/2020
Marko P.
Netherlands Netherlands
Front powerlog mounting

ZZP’s front powerlog is verry wel made overal exept for the outlet ‘cone’ that is not “machine”finished like OEM style. So it does experience some leaks. I will fix it with high temp RTV sealant or graphite gasket (universal cut to fit sheet). This is my second purchase of front power log. The newer ones are defenetly better made! (Better fitment that doesn’t need extra drilling of the holes). Bottom line, no exhaust leaks-better gas-mileage! ;)

ZZPerformance Stainless Power Log Review
R
11/04/2020
Rick
United States United States
Look good

The front power log looks nice and fit perfect. They could use a better ****** setup. The M8x1.25 bolts supplied are too long and thin in my opinion. Do yourself a favor and buy 2 M8x1.25x50mm ****** bolts to fit better. (Supplied are 60mm).

TC
10/03/2020
Ty C.
United States United States
Great upgrade

This is the one you want! This Power log took me around 45mins to install due to my dip stick being a real dip! After install the performance is phenomenal! It really allows the engine to hold its own at high rpms. It pulls well. I'm running the L36 with full synthetic oil. The CAI, Zzp coil packs/wires, oem spark plugs and this Power log. I feel like its performance is complete. My gas mileage is around 29-32 mpg on 91 premium.. I still have the intake manifold and the computer unit on my checklist but that will be after this winter.Thx ZZP!

ZZPerformance Stainless Power Log Review
RM
10/03/2020
Robert M.
United States United States
1997 Buick Riviera

I love this new exhaust manifold. Looks great and lines up perfectly.

CF
09/24/2020
Cory F.
United States United States
04 'monte 3.8L

Pretty straightforward. Def recommend soaking the bolts with some PB blast. Was pretty easy to do. Took my a little longer than it should've but i was moving slow and taking every precaution.