243 heads/ws6 store hot cam/fast 92mm intake and TB
03-14-2019, 12:53 PM
#41
Yea, I’m probably just paranoid because of the tuners attitude.
Well I already have the FAST Intake Manifold 92mm with the Big Mouth 92mm, SLP Lid, And Ssra with the filter lid Mod and SLp bellow. Already have the SLP UD pulley. I do have stock shocks and springs. But I have Umi sway bars, panhard bar, rlca, panhard relocation bar, steel braided brake lines, brembo rotors in the back with hawk pads and Brembo GT BBK in front.
I am am on the actual FBody muffler and cats with after market y pipe and after market shorties.
03-14-2019, 01:00 PM
#42
TECH Senior Member
Anything after the cats is smog legal. Noise legal is another can of worms and different legal dept. lol
03-14-2019, 04:43 PM
#43
396KillaWS6, your car is definitely one of my favorite build on LS1TECH.
Less than 13,000 miles wow! That's a brand new LS1 WS6 for all practical purposes 
That sounds like a very annoying experience with the tuner. Sounds like the appointments were booked too close together. The power numbers sound great and idrive ability is good too that's a great combination
there are a few phone apps like Sound Meter than can be used to get a rough idea of how loud the exhaust measures in dB level. It's not perfectly accurate but it may give a fair idea. Check at idle and 2,000 rpm, 20 inches away level with the exhaust tip at 45 degree angle. I'd so check from directly behind. I'm guessing your car will be less than 90dB. 95dB is the California limit from what I've read. Over 95 dB is ticket territory.
My 99 T/A 416 long tubes, no cats, BlackHeart True Dual measured 92dB at 2,000 rpm I think you going to be OK on noise.
The old SLP Dual /Dual flows great (7 hp better per GM) and is quiter than the WS6 stock catback if you decide to do that Stealth 408 and need to cut a few dB of loudness.
00 Pooter SS & Gtasma,
I think the BlackHeart shorties are CARB legal.
SLP did a Y pipe, it was the same as the factory Y pipe but not flattened on the drive side. Bolted up to all of the stick exhaust system. It was one of the first mod's I did ony 99 TA back in 1999 The Y left cats in Stock location and was as emissions legal too since it was after the cats
The stock WS6 exhaust muffler etc was 2 3/4 if I recall correctly and flowed better than the stock Z28/TA muffler etc.
Less than 13,000 miles wow! That's a brand new LS1 WS6 for all practical purposes That sounds like a very annoying experience with the tuner. Sounds like the appointments were booked too close together. The power numbers sound great and idrive ability is good too that's a great combination
there are a few phone apps like Sound Meter than can be used to get a rough idea of how loud the exhaust measures in dB level. It's not perfectly accurate but it may give a fair idea. Check at idle and 2,000 rpm, 20 inches away level with the exhaust tip at 45 degree angle. I'd so check from directly behind. I'm guessing your car will be less than 90dB. 95dB is the California limit from what I've read. Over 95 dB is ticket territory.
My 99 T/A 416 long tubes, no cats, BlackHeart True Dual measured 92dB at 2,000 rpm
I think you going to be OK on noise.The old SLP Dual /Dual flows great (7 hp better per GM) and is quiter than the WS6 stock catback if you decide to do that Stealth 408 and need to cut a few dB of loudness.
00 Pooter SS & Gtasma,
I think the BlackHeart shorties are CARB legal.
SLP did a Y pipe, it was the same as the factory Y pipe but not flattened on the drive side. Bolted up to all of the stick exhaust system. It was one of the first mod's I did ony 99 TA back in 1999
The Y left cats in Stock location and was as emissions legal too since it was after the catsThe stock WS6 exhaust muffler etc was 2 3/4 if I recall correctly and flowed better than the stock Z28/TA muffler etc.
Last edited by 99 Black Bird T/A; 03-14-2019 at 04:53 PM.
03-14-2019, 05:40 PM
#44
TECH Senior Member
I think you're correct re: legal Blackheart shorties. Some say they are no better than stock manifolds but others say it is an improvement. They have to flow better than manifolds.
03-14-2019, 09:15 PM
#45
396KillaWS6, your car is definitely one of my favorite build on LS1TECH. Less than 13,000 miles wow! That's a brand new LS1 WS6 for all practical purposes
That sounds like a very annoying experience with the tuner. Sounds like the appointments were booked too close together. The power numbers sound great and idrive ability is good too that's a great combination
there are a few phone apps like Sound Meter than can be used to get a rough idea of how loud the exhaust measures in dB level. It's not perfectly accurate but it may give a fair idea. Check at idle and 2,000 rpm, 20 inches away level with the exhaust tip at 45 degree angle. I'd so check from directly behind. I'm guessing your car will be less than 90dB. 95dB is the California limit from what I've read. Over 95 dB is ticket territory.
My 99 T/A 416 long tubes, no cats, BlackHeart True Dual measured 92dB at 2,000 rpm I think you going to be OK on noise.
The old SLP Dual /Dual flows great (7 hp better per GM) and is quiter than the WS6 stock catback if you decide to do that Stealth 408 and need to cut a few dB of loudness.
00 Pooter SS & Gtasma,
I think the BlackHeart shorties are CARB legal.
SLP did a Y pipe, it was the same as the factory Y pipe but not flattened on the drive side. Bolted up to all of the stick exhaust system. It was one of the first mod's I did ony 99 TA back in 1999 The Y left cats in Stock location and was as emissions legal too since it was after the cats
The stock WS6 exhaust muffler etc was 2 3/4 if I recall correctly and flowed better than the stock Z28/TA muffler etc.
Less than 13,000 miles wow! That's a brand new LS1 WS6 for all practical purposes That sounds like a very annoying experience with the tuner. Sounds like the appointments were booked too close together. The power numbers sound great and idrive ability is good too that's a great combination
there are a few phone apps like Sound Meter than can be used to get a rough idea of how loud the exhaust measures in dB level. It's not perfectly accurate but it may give a fair idea. Check at idle and 2,000 rpm, 20 inches away level with the exhaust tip at 45 degree angle. I'd so check from directly behind. I'm guessing your car will be less than 90dB. 95dB is the California limit from what I've read. Over 95 dB is ticket territory.
My 99 T/A 416 long tubes, no cats, BlackHeart True Dual measured 92dB at 2,000 rpm
I think you going to be OK on noise.The old SLP Dual /Dual flows great (7 hp better per GM) and is quiter than the WS6 stock catback if you decide to do that Stealth 408 and need to cut a few dB of loudness.
00 Pooter SS & Gtasma,
I think the BlackHeart shorties are CARB legal.
SLP did a Y pipe, it was the same as the factory Y pipe but not flattened on the drive side. Bolted up to all of the stick exhaust system. It was one of the first mod's I did ony 99 TA back in 1999
The Y left cats in Stock location and was as emissions legal too since it was after the catsThe stock WS6 exhaust muffler etc was 2 3/4 if I recall correctly and flowed better than the stock Z28/TA muffler etc.
That's a lot of good info, thanks mane
I'm not sure what 90 db exhaust exactly sounds like, but that black heart sounds like the ticket for OP. All the other standard offerings are really loud. I had true duals with bullets, I should have measured the db on that, but it would probably have broken the mic, it was stupid loud.
03-14-2019, 09:50 PM
#46
396KillaWS6, your car is definitely one of my favorite build on LS1TECH. Less than 13,000 miles wow! That's a brand new LS1 WS6 for all practical purposes
That sounds like a very annoying experience with the tuner. Sounds like the appointments were booked too close together. The power numbers sound great and idrive ability is good too that's a great combination
there are a few phone apps like Sound Meter than can be used to get a rough idea of how loud the exhaust measures in dB level. It's not perfectly accurate but it may give a fair idea. Check at idle and 2,000 rpm, 20 inches away level with the exhaust tip at 45 degree angle. I'd so check from directly behind. I'm guessing your car will be less than 90dB. 95dB is the California limit from what I've read. Over 95 dB is ticket territory.
My 99 T/A 416 long tubes, no cats, BlackHeart True Dual measured 92dB at 2,000 rpm I think you going to be OK on noise.
The old SLP Dual /Dual flows great (7 hp better per GM) and is quiter than the WS6 stock catback if you decide to do that Stealth 408 and need to cut a few dB of loudness.
00 Pooter SS & Gtasma,
I think the BlackHeart shorties are CARB legal.
SLP did a Y pipe, it was the same as the factory Y pipe but not flattened on the drive side. Bolted up to all of the stick exhaust system. It was one of the first mod's I did ony 99 TA back in 1999 The Y left cats in Stock location and was as emissions legal too since it was after the cats
The stock WS6 exhaust muffler etc was 2 3/4 if I recall correctly and flowed better than the stock Z28/TA muffler etc.
Less than 13,000 miles wow! That's a brand new LS1 WS6 for all practical purposes That sounds like a very annoying experience with the tuner. Sounds like the appointments were booked too close together. The power numbers sound great and idrive ability is good too that's a great combination
there are a few phone apps like Sound Meter than can be used to get a rough idea of how loud the exhaust measures in dB level. It's not perfectly accurate but it may give a fair idea. Check at idle and 2,000 rpm, 20 inches away level with the exhaust tip at 45 degree angle. I'd so check from directly behind. I'm guessing your car will be less than 90dB. 95dB is the California limit from what I've read. Over 95 dB is ticket territory.
My 99 T/A 416 long tubes, no cats, BlackHeart True Dual measured 92dB at 2,000 rpm
I think you going to be OK on noise.The old SLP Dual /Dual flows great (7 hp better per GM) and is quiter than the WS6 stock catback if you decide to do that Stealth 408 and need to cut a few dB of loudness.
00 Pooter SS & Gtasma,
I think the BlackHeart shorties are CARB legal.
SLP did a Y pipe, it was the same as the factory Y pipe but not flattened on the drive side. Bolted up to all of the stick exhaust system. It was one of the first mod's I did ony 99 TA back in 1999
The Y left cats in Stock location and was as emissions legal too since it was after the catsThe stock WS6 exhaust muffler etc was 2 3/4 if I recall correctly and flowed better than the stock Z28/TA muffler etc.
03-14-2019, 10:25 PM
#47
This might sort of help as a rough yard stick idea for loudness. The average dishwasher is pretty loud and annoying in my opinion.
Typical car or truck horn (110 dB)
power mower (96 dB)
My 99 T/A at 2,000 rpm at exhaust level 20 inches 92 dB
motorcycle at 25 ft (90 dB).
Possible hearing damage in 8 hour exposure in 80s
Dishwasher, average factory, freight train @ 50 feet (89 dB)
Car wash at 20 ft (89 dB)
Food blender (88 dB) -
milling machine (85 dB)
garbage disposal (80 dB)
freeway at 50 ft from pavement edge 10 a.m. (76 dB).
Living room music (76 dB);
radio or TV-audioy
My 99 TA on Highway at 70 mph inside car (72 dB)
vacuum cleaner (70 dB)
Fairly quiet
Conversation in restaurant (60 dB)
BTW - BlackHeart has a 1 3/4 inch primary shorty header, I think it flows better than the better fbody cast iron stock exhaust manifold. Have a set of extrude honed cast iron 2001 fbody manifolds that are extra thin so they will flow better. They weren't quite 1 5/8 in the primary if I recall correctly. Measured a long time ago.
Typical car or truck horn (110 dB)
power mower (96 dB)
My 99 T/A at 2,000 rpm at exhaust level 20 inches 92 dB
motorcycle at 25 ft (90 dB).
Possible hearing damage in 8 hour exposure in 80s
Dishwasher, average factory, freight train @ 50 feet (89 dB)
Car wash at 20 ft (89 dB)
Food blender (88 dB) -
milling machine (85 dB)
garbage disposal (80 dB)
Upper 70s are annoyingly loud to some people
Passenger car at 65 mph at 25 ft (77 dB);freeway at 50 ft from pavement edge 10 a.m. (76 dB).
Living room music (76 dB);
radio or TV-audioy
My 99 TA on Highway at 70 mph inside car (72 dB)
vacuum cleaner (70 dB)
Fairly quiet
Conversation in restaurant (60 dB)
BTW - BlackHeart has a 1 3/4 inch primary shorty header, I think it flows better than the better fbody cast iron stock exhaust manifold. Have a set of extrude honed cast iron 2001 fbody manifolds that are extra thin so they will flow better. They weren't quite 1 5/8 in the primary if I recall correctly. Measured a long time ago.
03-15-2019, 11:47 AM
#48
This might sort of help as a rough yard stick idea for loudness. The average dishwasher is pretty loud and annoying in my opinion.
Typical car or truck horn (110 dB)
power mower (96 dB)
My 99 T/A at 2,000 rpm at exhaust level 20 inches 92 dB
motorcycle at 25 ft (90 dB).
Possible hearing damage in 8 hour exposure in 80s
Dishwasher, average factory, freight train @ 50 feet (89 dB)
Car wash at 20 ft (89 dB)
Food blender (88 dB) -
milling machine (85 dB)
garbage disposal (80 dB)
freeway at 50 ft from pavement edge 10 a.m. (76 dB).
Living room music (76 dB);
radio or TV-audioy
My 99 TA on Highway at 70 mph inside car (72 dB)
vacuum cleaner (70 dB)
Fairly quiet
Conversation in restaurant (60 dB)
BTW - BlackHeart has a 1 3/4 inch primary shorty header, I think it flows better than the better fbody cast iron stock exhaust manifold. Have a set of extrude honed cast iron 2001 fbody manifolds that are extra thin so they will flow better. They weren't quite 1 5/8 in the primary if I recall correctly. Measured a long time ago.
Typical car or truck horn (110 dB)
power mower (96 dB)
My 99 T/A at 2,000 rpm at exhaust level 20 inches 92 dB
motorcycle at 25 ft (90 dB).
Possible hearing damage in 8 hour exposure in 80s
Dishwasher, average factory, freight train @ 50 feet (89 dB)
Car wash at 20 ft (89 dB)
Food blender (88 dB) -
milling machine (85 dB)
garbage disposal (80 dB)
Upper 70s are annoyingly loud to some people
Passenger car at 65 mph at 25 ft (77 dB);freeway at 50 ft from pavement edge 10 a.m. (76 dB).
Living room music (76 dB);
radio or TV-audioy
My 99 TA on Highway at 70 mph inside car (72 dB)
vacuum cleaner (70 dB)
Fairly quiet
Conversation in restaurant (60 dB)
BTW - BlackHeart has a 1 3/4 inch primary shorty header, I think it flows better than the better fbody cast iron stock exhaust manifold. Have a set of extrude honed cast iron 2001 fbody manifolds that are extra thin so they will flow better. They weren't quite 1 5/8 in the primary if I recall correctly. Measured a long time ago.
I woke up with wanting a bigger cam, any suggestions?
03-15-2019, 11:51 AM
#49
i wouldnt go that route. id maximize what you have now. you still have more left in the car with that cam. every-time i went bigger i then later swapped it out for smaller and enjoyed it 100times more. the days of bigger is better are long gone.
03-15-2019, 11:57 AM
#50
maybe another tuner?
03-15-2019, 12:01 PM
#51
that if you think so and better exhaust. depending what your compression is you can raise that. have the heads cnc and have the intake ported and port matched to the cnc heads. just make sure everything is working at its best before you swap the cam.
hell you dont touch anything and put it on a dyno jet it will make more power just doing that if it makes you feel better lol
hell you dont touch anything and put it on a dyno jet it will make more power just doing that if it makes you feel better lol
03-15-2019, 12:03 PM
#52
I already did that, not CNC, but the intake was laid on top of heads and opened to matched the cathedral ports..
03-15-2019, 12:06 PM
#53
not doing the exhaust and doing a bigger cam is rather pointless in my book. your fixing something with a band aid. even with a bigger cam it will not be at its best bc the combo is not at its best. alot of weak points like the exhaust. every little thing adds up.
03-15-2019, 12:19 PM
#54
I see. I’ll stick to a retune then. Yesterday a couple guys told me that that tuner only does a good job on people he knows, everyone else gets a 2 out of 5 tune.
03-15-2019, 12:24 PM
#55
i would do somerhing with the exhaust first to make it breath better. whether thats going to a custom made high flowing ypipe setup and cutout so you can keep the stock catback then do so and then get it returned.
03-15-2019, 12:28 PM
#56
I was thing an SLP loud mouth, is the SLP Y pipe considered a high flow? but for a few more bucks I can get cutouts..
03-15-2019, 12:33 PM
#57
i would stay away from anything SLP.
get yourself either a full hooker blackheart true dual or go with a magnaflow catback with a custom made ypipe with a flowmaster merge and a cutout.
get yourself either a full hooker blackheart true dual or go with a magnaflow catback with a custom made ypipe with a flowmaster merge and a cutout.
03-15-2019, 12:35 PM
#58
