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#1 |
The Mechanic
Drives: 1SS M Join Date: Dec 2017
Location: NJ
Posts: 294
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Dyno results BTR225 vs FBO vs stock
Since buying my car new in 2018 I've dyno'd at the same location in generally cooler weather to track progress. All work and ecu calibrations (tuning) is done by me.Im not paid or sponsored for this, its information that may with other data collecting nerds like myself.Stock with probably 2 or 3k miles i brought it in for its first dyno.
Bone stock m6 1ss on 93 pump. I recall it making 404whp and 414tq but i can't find the picture so ill post the one i found which is 400whp 412tq. For the 2nd phase/ FBO phase the car was fitted with 1"7/8 headers and mid pipes, catless, stock muffler. A JLT intake, LT2 manifold, ported stock tb and ecu settings where made thru hptuners. It made 463whp and 467wtq after some fuel adjustments on the dyno. 3rd phase was 2 cracked piston ring lands after a few years of time trial events. So I rebuilt the engine with Diamond forged pistons, stock c/r, arp rod bolts, head studs and pmax black bearings across the board. While in there i tossed in a brian tooley racing 225 cam, springs etc and had the heads cnc ported. Then added a 95mm tb and ported it because why not. Final numbers after some on dyno adjustments went from 507whp 518whp. After letting the car cool from runs and pulling off the oiled air filter, the car made 528whp and 486wtq and pulls to 7500. Overall pretty satisfied with the results not losing any torque.
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BTR 225 w/CNC Heads|JLT intake|Speed Engineering 1"7/8 long tube and mid pipe|LT2 manifold w/95mmTb|Self tuned w/HPtuners|Silvers 2Way coilovers|Hotchkis front sway|Advan AD08R|BMR solid cradle bushings|Recaro SR7| Work ZR10 19"
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#2 |
![]() Drives: 2017 1SS M6 Join Date: Jul 2023
Location: North Carolina
Posts: 126
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Very nice numbers man!
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2017 1SS M6
~ Air Raid Cold Air Intake~ ~ 3" Corsa Extreme Catback Exhaust ~ |
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#3 |
![]() Drives: 2017 1SS M6 Join Date: Jul 2023
Location: North Carolina
Posts: 126
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Do you recall when you made the 1st bone stock pulls where the sweet spot was rpm wise?
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2017 1SS M6
~ Air Raid Cold Air Intake~ ~ 3" Corsa Extreme Catback Exhaust ~ |
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#4 | |
The Mechanic
Drives: 1SS M Join Date: Dec 2017
Location: NJ
Posts: 294
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Quote:
Not really, its really linear stock but it. Does die out up top by 6k so i wouldnt spend too much time up near the limiter.
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BTR 225 w/CNC Heads|JLT intake|Speed Engineering 1"7/8 long tube and mid pipe|LT2 manifold w/95mmTb|Self tuned w/HPtuners|Silvers 2Way coilovers|Hotchkis front sway|Advan AD08R|BMR solid cradle bushings|Recaro SR7| Work ZR10 19"
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#5 |
![]() Drives: 2022 camaro SS 1LE Join Date: Jan 2023
Location: Utah
Posts: 133
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Nice information brother thanks looks like you have a runner on your hands. Any future fun plans for it??
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#6 |
![]() Drives: 2022 camaro SS 1LE Join Date: Jan 2023
Location: Utah
Posts: 133
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Im debating a bigger custom cam, stall, an 2 in headers next down season.
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2022 Camaro SS 1LE, 427 Darton sleeved, Diamond pistons, Callies ultra rods, Callies crank, King bearings, ARP throughout, Cometic gaskets, large bore ported CID heads, Cam motion custom cam, C7R chain, Katech oil pump, LME chain guide, BTR pushrods, Johnson lifters, MSD intake, Katech 103mm tb, Rotofab cai, Kooks 1 7/8 headers, 3 in mandrel custom exhaust. Hp T93 TCM.
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#7 | |
The Mechanic
Drives: 1SS M Join Date: Dec 2017
Location: NJ
Posts: 294
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Quote:
Yea looks like a crazy build. Whats your power and cam specs now?
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BTR 225 w/CNC Heads|JLT intake|Speed Engineering 1"7/8 long tube and mid pipe|LT2 manifold w/95mmTb|Self tuned w/HPtuners|Silvers 2Way coilovers|Hotchkis front sway|Advan AD08R|BMR solid cradle bushings|Recaro SR7| Work ZR10 19"
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#8 |
![]() Drives: 2017 1SS M6 Join Date: Jul 2023
Location: North Carolina
Posts: 126
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good to know, thanks man!
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2017 1SS M6
~ Air Raid Cold Air Intake~ ~ 3" Corsa Extreme Catback Exhaust ~ |
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#9 | |
![]() ![]() Drives: 2004 BMW 330CI, 2022 1SS 1LE Join Date: Dec 2021
Location: NC
Posts: 808
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Quote:
First row is TIME, 2nd row is RPM, 3rd is Torque, 4th is HP. Torque holds pretty steady at between 400 to 415 from 2500 to 5200 RPM |
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#10 |
![]() ![]() Drives: 2018 Camaro SS 1LE Join Date: Jul 2018
Location: Stuttgart, Germany
Posts: 825
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Great data and appreciated!
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#11 |
![]() Drives: 2017 1SS M6 Join Date: Jul 2023
Location: North Carolina
Posts: 126
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This is great info! Thank you so much!
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2017 1SS M6
~ Air Raid Cold Air Intake~ ~ 3" Corsa Extreme Catback Exhaust ~ |
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#12 |
![]() ![]() ![]() Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,208
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This is the 230 cam on E85 with stock LT2, TB, stock exhaust, stock exhaust manifold. The 4 degree VVT advance is also modeled in but its just 4 degrees on/off at 6k. Its compared to stock on gasoline.
You can see its optimistic, but of course dyno sim doesn't simulate accessory loading and stuff like that. So its more of like a gross HP rating than SAE. I also did the runs in good weather. I've done some other sims and test with other engines and got within a few lb/hr in air mass flow, but I am missing a lot of things I need like intake manifold port taper and I am also relying on flow bench numbers from the internet. If you have valve event/cam degree data for the 225 cam I can plug it in for your setup. I will say when I degreed my 230 cam and tried to model the lobe I was getting like 253 degrees of exhaust duration, and of course BTR advertises 24X, so we don't really have a number to compare to. I guess it could be 249, but still to me something seemed off in the valve events. But its also hard to do when you don't have a solid lifter. |
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#13 | |
The Mechanic
Drives: 1SS M Join Date: Dec 2017
Location: NJ
Posts: 294
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Quote:
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BTR 225 w/CNC Heads|JLT intake|Speed Engineering 1"7/8 long tube and mid pipe|LT2 manifold w/95mmTb|Self tuned w/HPtuners|Silvers 2Way coilovers|Hotchkis front sway|Advan AD08R|BMR solid cradle bushings|Recaro SR7| Work ZR10 19"
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#14 | |
![]() ![]() ![]() Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,208
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Quote:
I guess it's possible the curve fitter just couldn't fit the exhaust open or close ramp due to a radically different profile and that's why the exhaust duration goes into the 250's. However, I believe the main goal of the fitter is continuity since that's a given that a cam will always be smooth and continuous profile (or at least you hope), but we know a lot of the sub 0.020 lift open and close ramp curves mean a lot in terms of aggressiveness of the profile. There is actually a lot that goes into just trying to define a cam profile, and even if you have a high number of discreet lift data through the entire ramp, if you want to tweak the valve events it's not so easy. So a curve fitting approximation, defined by valve closing/opening events is easiest to work with. When I get some time ill plug in your degree numbers from your 225 cam and compare the 225 to the 230. |
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