When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Below is the dyno sheet on my 2014 Stingray Z51 with M7.
Mods are:
ARH Mid-Length headers with ARH cats (wished I had gotten long tubes)
Ported Intake Manifold (done by me and I think this is worth the time to do)
Katech Ported Throttle body (does this add any HP?)
K&N Air filter
Insulated air cleaner box (summer in Texas is HOT)
Insulated coolant hoses
E85 fuel sensor and Dyno Tune by Aikman Performance.
No bone stock dyno done. Base dyno here had all the mods except the E85 and Dyno Tune.
Originally, I wanted to install the GM Hot Cam, GM CNC heads, and Dyno Tune, but Jerry Aikman recommended just the E85 conversion and Dyno Tune. I thought the 440 rwhp number was right on target but the 456 rwtq number really surprised me. GM left a lot of HP on the table by the looks of the torque curve as it really noses over after 5000 rpm and peak HP is just under 6000 rpm.
Considering the cost and hassle of swapping the cam and heads, I think this set up is very attractive alternative. E85 is at the Valeo station .5 miles from my office at $2.09/gal.
The numbers look good. I have similar mods ARH mid length with out E85 and my numbers are much lower. I'm at 427 rwhp / 436 rwtq. I'd like to run E85 but can't find any stations close by. Can you please post pics of the insulated air cleaner and coolant hose?
Mine look very close. 2016 arh long tubes no cats. Afe cai tuned on 93 octane 94* day in Florida. I think an intake and throttle body would be worth about 15 more hp.
The coolant hoses are much cooler to the touch. The air filter box is surrounded by very hot components and both coolant hoses. The IATs reach 150° and anything you can do to insulate the incoming air helps.
I posted a study a while ago using HP Tuner scanner and the C7 has a major issue with high IATs at speeds under 50 mph.
Dyno with mods
