Btr stage 4 dyno results
07-28-2018, 08:25 AM
#21
if you can get rid of them anything to help it breath/exhale. It’s choked at this point
07-28-2018, 08:50 AM
#22
I dunno, I'm not a build expert. But seeing as we were tuned on the same dyno and you have a radically more aggressive cam with less torque and no peak power over me, it seems like you've got something to address. If he wasn't so stingy with providing PDF dyno charts, it'd be interesting to compare ours. I also run only 91, not 93.
Last edited by cseaman; 07-28-2018 at 01:41 PM. Reason: dumb type-o
07-28-2018, 11:43 AM
#23
Cruising
Thread Starter
I dunno, I'm not a build expert. But seeing as we were tuned on the same dyno and you have a radically more aggressive tune with less torque and no peak power over me, it seems like you've got something to address. If he wasn't so stingy with providing PDF dyno charts, it'd be interesting to compare ours. I also run only 91, not 93.
Last edited by JSBzo6c6; 07-28-2018 at 11:50 AM.
07-28-2018, 02:00 PM
#24
Clogged cats/fouled or wrong plugs/burnt wire/bad gas?
You have the right parts but your numbers are off. I'd fix the problem before putting more mods on IMO. The stock intake/TB is a restriction, but not at the power levels you're seeing.
You have the right parts but your numbers are off. I'd fix the problem before putting more mods on IMO. The stock intake/TB is a restriction, but not at the power levels you're seeing.
07-28-2018, 02:11 PM
#25
Cruising
Thread Starter
plugs are the ones ahp sent with the headers along with new wires. I did the drive the car a couple days untuned but dont think they would foul that quickly? Car had 1/4 of 91 octane that had been sitting in there for about 5-6 months I topped off with 93. Cats could be a possibility but wouldn't that give me more issues/symptoms?
07-28-2018, 05:08 PM
#26
Hi all, this is actually my first post! I finally joined after months of coming here for diys and help lol.. car is a 09 zo6, have owned it for 3 years with just bolt ons (headers, high flow cats, intake, exhaust and tune. Never got dynod though) after being paranoid to drive the car because of the valve drop issue I kept hearing about with the ls7 I finally got AHP heads. Did a .030 mill and decided on the btr stage 4 cam. Of course went with arp bolts for the heads and crank pulley, a 160 thermostat, new OEM lifters and the che trunion upgrade. Got her tuned and she made 554whp on a 100 degree day. That is what I was expecting but the torque is what is throwing me off, only made 477wtq. I heard the intake manifold and a ported throttle body will help but I see cars with a stage 3 put down atleast 500wtq. Any one else see similar numbers? Car has 46k miles and running 93 octane. Tuner has a very good reputation in my area.
Since then I have picked up an MSD waiting to have tony port it and I will purchase a NW102 very soon. There was a forum on here where a guy had a similar set up with the btr stage 4 and switched from stock to MSD Mamo and NW102. He pick up some ridiculous hp(50rwhp). So there is till hope for some better numbers.
Last edited by Speeddemon777; 07-28-2018 at 05:10 PM.
07-29-2018, 12:45 AM
#27
Cruising
Thread Starter
I have the same mods minus the cats and i have a Halltech MF108 on 2006 z06, I made 544rwhp and 485rwtq on a dynojet. I was pretty bummed as well but my tuner showed me that my intake pressure was still at vacuum at WOT. He basically said my huge cam, AHP .030" heads, and BB headers were flowing more air then what the intake and throttle body could handle and that the car was struggling to breath. It didnt make sense why my friends btr stage III made more torque and more hp then me either. My theory(could be totally wrong) is volume vs velocity. Our huge cams require more volume of air, but are struggling to meet demand, this ends up costing performance as it slows down the velocity of air through the engine. Like I said could be talking out my a** but it makes sense to me.
Since then I have picked up an MSD waiting to have tony port it and I will purchase a NW102 very soon. There was a forum on here where a guy had a similar set up with the btr stage 4 and switched from stock to MSD Mamo and NW102. He pick up some ridiculous hp(50rwhp). So there is till hope for some better numbers.
Since then I have picked up an MSD waiting to have tony port it and I will purchase a NW102 very soon. There was a forum on here where a guy had a similar set up with the btr stage 4 and switched from stock to MSD Mamo and NW102. He pick up some ridiculous hp(50rwhp). So there is till hope for some better numbers.
08-12-2018, 04:55 PM
#28
Cruising
Thread Starter
Just an update, tony should be shipping out my intake this week and my 102mm tb will be arriving Wednesday. Also getting rid of my cats very soon. Really curious how much of a difference it will make when I take it back to get tuned/on the dyno. Any idea if I should look into bigger injectors? Just want to make sure I have everything taken care of before I go for the tune
08-12-2018, 05:16 PM
#29
I dont see how an intake is going to fix that or is the restriction. My stock LS7 intake is making 600whp with a similar spec cam and PRC heads with 1 7/8" headers
08-12-2018, 05:34 PM
#30
We have a number of cars on the fast list with our heads. in fact numbers 1 and 2 on the fast list are running our ported heads.
A little saltyness i see. Its easy to hate on a company as good and as popular as we are.
Our heads regurally outflow and out preform wcch and other competitors.
Our heads are some of the best for performance and longevity.
OP high possibility you need more air coming into the engine. the BTR4 likes a larger intake and throttle body.
A little saltyness i see. Its easy to hate on a company as good and as popular as we are.
Our heads regurally outflow and out preform wcch and other competitors.
Our heads are some of the best for performance and longevity.
OP high possibility you need more air coming into the engine. the BTR4 likes a larger intake and throttle body.
#1 N/A is running Livernois CNC and milled LS7 heads
#2 N/A doesnt specify
#1 Power Adder is running AllPros
#2 Power Adder doesn't specify but looking at that build, I dont see why AHP heads would be on that car
The following users liked this post:
Turbo2L (09-09-2018)
09-09-2018, 02:46 PM
#32
09-10-2018, 11:38 AM
#33
Supporting Vendor
Member Since: Sep 2013
Location: Harbor City California
Posts: 2,817
Received 1,012 Likes
on
533 Posts
Great Numbers!!!
https://www.americanheritageperformance.com/
