Too-Fast

Here is a follow up to my Thread of the "spring on" Wiggle Test I did in March. My heads/guides were bad at 3,027 miles. Three of the intakes were so loose the Machine Shop said they did not even measure them they were so loose. I contacted AHP and of course Kohle was great; went with his Package 4 heads, Moldstar 90 guides, PSI springs w/titanium retainers, Ferrea SS exhaust valves, race porting and 0.030 milling. I cannot say enough about Kohles customer service, direct feedback, discussions on the phone and via e-mail, the guy is great to deal with and genuine. Jake at AHP handled all of the logistics and helped facilitate the communications and was also great to deal with.

HPA installed the CHE bronze bushings in the rockers, their Stage 2 Cam package (TSP), with an Airaid CAI, the Haltech does not fit a C6 Z07 correctly. Here is the result: 552RWHP and 501 Torque; I am a happy guy. No surging, the idle is at 800-825, car drives smooth even at 1500 RPM. The team at HPA in DE were great, Kevin who helped me through the whole process and dealing with my extended warranty company and getting the heads back and forth for testing and Matt with the delivery and of course Josh, the owner, who does all of their tuning; he spent another hour with me explaining what he did and drove with me for the final adjustments.

MoNkEy

nuke61

Very nice results! Congratulations :-)

Innovate

Mordeth

Nice job and great results!

Jayfabs

Too-Fast

Thanks guys, appreciate the kind words! Now to see what a difference it makes next weekend...Roll Racing at Pocono.

atomic 505hp

WOW Nice. 75 hp, TQ gain +- 5hp. That is a great start with reliability and drivability.

nuke61

1/2 mile? My guess is ~160 mph.

Too-Fast

Unfortunately no, the Pocono Race ends up being about a 1/3 Mile, my best last year was 141, bone stock.

Too-Fast

Thanks, I wanted to do a baseline dyno initially but then decided against it, I did not want to risk a failure due to the guides, but I am very pleased with the results.

Too-Fast

Thank you.

Must_Have_Z

Nice build! You picked a great cam, sounds similar to my custom cam that put down 556/485 with almost stock drivability. Congrats!

Jaybird29

Awesome. Let me know how you like the AirRaid CAI.

Too-Fast

The fit and finish are very good and the function is fine. I can't really tell if its making any difference because there was no before and after direct comparison done and the car has been re-tuned. I was thinking of doing a direct comparison at a later date with the dyno.

Josh B.

Congrats on the build! I haven't done business with AHP yet but I hear the customer service is great. Great dyno results, and it's awesome that your tuner walked you through his process and went with you for the final drive. Those little things mean alot to me.

Too-Fast

Yes, Kohle and his team are great and the HPA guys in Delaware have great customer service also.

TXGS507

Very nice... Gorgeous car...

BigVette427

I wish I knew more about what the tune on my build was comprised of. Perhaps I need to pick up HPA tuners or something so that I can see where everything is myself, I hate being in the dark on my own ride.

Honestly, I probably would have been happier with my results had I not did a before baseline dyno just because I was expecting a little greater delta. Otherwise content with the end results considering that I retained OE intake manifold, throttle body, air intake, and exhaust manifolds. Maybe the only thing I wish I would have done on my build that I didn't, (and ironically the one thing that wouldn't have cost me anything,) was some additional milling, if even .010". (I was a little concerned if somebody ever wanted to take the car up to Oklahoma where they only have 91 octane and perhaps overly errored on the side of caution.)

I know I can get rid of some my remaining backpressure with that that Corsa x-pipe that omits the 3rd and 4th cats, but I'm not sure I want to go with an after market CAI and lose OE appearance; certainly not interested in an oiled media filter. Almost more inclined to go with a stealth MSD intake before going to an aftermarket CAI, but not sure how much that would help if the air intake is still the bottleneck.

I was scared off on TSP's new v.2 cams when they dropped their LSA's as low as they did; TSP Stage 2.2 is 234/246 (.635"/.635" lobes) on a 112.5 LSA, as opposed to their previous v.1 that had a 115 LSA. With 15° of overlap, I wasn't expecting that to run as tempered as it appears. I do otherwise like how TSP has dyno results before and after of their cams, that is a lot better than nothing. Still, there was not as many TSP cams in LS7's out there to compare and contrast. If you were able to get this cam to tune out as well as it appears, I as well would be very happy with your results!

Too-Fast

The Airaid CAI looks very factory to me and I went with the Synthmax, so no oil. The car settles in to a nice idle, about 825RPM, it definitely sounds like a cam, with a mild lope. When I close the flaps, you almost cannot tell, but with them open the car is louder than it was before everything was done. The real proof will be this weekend at Pocono to see where it ends up with top MPH.