Cammed & Supercharged L99 Dyno Results, help and feedback needed.

[Unreal]

Originally Posted by old motorhead

What's up with the hp and tq curves meeting at 6250 rpm? That's a new one on me Somethin' ain't quite right there.

Same reason it always doesn't meet at 5250, the scales for TQ and HP are different. Just look at the sides of the graphs. The left side is shifted up ~25 units or so.

[old motorhead]

Originally Posted by Unreal

Same reason it always doesn't meet at 5250, the scales for TQ and HP are different. Just look at the sides of the graphs. The left side is shifted up ~25 units or so.

If a computer can get the tq and hp on the same graph, I wonder why they can't be synced up?

[Supercharged SS]

Originally Posted by catalan

Thanks, lots recommended me the LS3 factory Exhaust as the L99 one would strangle the car because it comes with a big rectangle resonator in the middle ..

I found one LS3 Factory Exhaust that was installed on a Camaro which had the gfx body kit, do you think it will fit my car ( with no gfx ) in them? Are they compatible?

I run two 12" resonators on my car. It made no difference in the rwhp.

[Unreal]

Originally Posted by old motorhead

If a computer can get the tq and hp on the same graph, I wonder why they can't be synced up?

Just an option you click in the software. That is just up to the dyno operator to set the scales.

[catalan]

Originally Posted by Supercharged SS

I run two 12" resonators on my car. It made no difference in the rwhp.

Thanks to those who recommended me the LS3 factory catback , i might take that option .. But is your car cammed and supercharged with those resonators?

It might not make a difference in rwhp, but would it strangle the car having your L99 catback with a blower and a cam on top of it?

I'm hearing two different opinions here ..

One that tells me that the L99 flows very well, others say that it will reduce the life cycle of my engine as the car won't be able to breath well as the factory catback cannot handle the amount of air produced by the cam and supercharger !

I wonder if it's safe in the long run .. :(

[old motorhead]

Originally Posted by catalan

Thanks to those who recommended me the LS3 factory catback , i might take that option .. But is your car cammed and supercharged with those resonators?

It might not make a difference in rwhp, but would it strangle the car having your L99 catback with a blower and a cam on top of it?

I'm hearing two different opinions here ..

One that tells me that the L99 flows very well, others say that it will reduce the life cycle of my engine as the car won't be able to breath well as the factory catback cannot handle the amount of air produced by the cam and supercharger !

I wonder if it's safe in the long run .. :(

If it makes no difference in rwhp, it's not strangling your motor. Restriction in the exhaust equates to less rwhp. If there's no loss in power, there's no restriction. I'd worry more about the cats if you still have them. They can go from fine to way less than fine in a big hurry. The resonators/mufflers are the same today as they will be tomorrow.

[Supercharged SS]

Originally Posted by catalan

Thanks to those who recommended me the LS3 factory catback , i might take that option .. But is your car cammed and supercharged with those resonators?

It might not make a difference in rwhp, but would it strangle the car having your L99 catback with a blower and a cam on top of it?

I'm hearing two different opinions here ..

One that tells me that the L99 flows very well, others say that it will reduce the life cycle of my engine as the car won't be able to breath well as the factory catback cannot handle the amount of air produced by the cam and supercharger !

I wonder if it's safe in the long run .. :(

Ha, yeah, it's got a little cam. Makes over 750 rwhp and runs 9's on the track. I don't think the resonators are holding the power back,

[catalan]

Originally Posted by old motorhead

If it makes no difference in rwhp, it's not strangling your motor. Restriction in the exhaust equates to less rwhp. If there's no loss in power, there's no restriction. I'd worry more about the cats if you still have them. They can go from fine to way less than fine in a big hurry. The resonators/mufflers are the same today as they will be tomorrow.

Right now, I’m on SW Retro Chambered Catback, I have a free air flow from headers till all the way out.

And don’t worry about the cats, I have off roads instead of HighFlowCats. I’ve read enough of those threads and to be in the safe side, I decided to stick with off roads for now.

To be honest, I don’t know if it makes a difference in rwhp, I would definitely assume it will as the car will turn from a free flow 3inch exhaust to a 2.5inch factory L99 exhaust which will create restriction, strangling the car and hence, reducing the life cycle of my engine even if tuned correctly? ( correct me if I’m wrong) some say i will get higher boost but that's a prediction !

Originally Posted by Supercharged SS

Ha, yeah, it's got a little cam.[IMG]file:///C:\Users\PEPESO~1\AppData\Local\Temp\msohtmlclip1\ 01\clip_image001.gif[/IMG] Makes over 750 rwhp and runs 9's on the track. I don't think the resonators are holding the power back,

Is your 12'' resonators look like that? Would you put that on your supercharged cammed car? and why ?

[Supercharged SS]

Originally Posted by catalan

Right now, I’m on SW Retro Chambered Catback, I have a free air flow from headers till all the way out.

And don’t worry about the cats, I have off roads instead of HighFlowCats. I’ve read enough of those threads and to be in the safe side, I decided to stick with off roads for now.

To be honest, I don’t know if it makes a difference in rwhp, I would definitely assume it will as the car will turn from a free flow 3inch exhaust to a 2.5inch factory L99 exhaust which will create restriction, strangling the car and hence, reducing the life cycle of my engine even if tuned correctly? ( correct me if I’m wrong) some say i will get higher boost but that's a prediction !




Is your 12'' resonators look like that? Would you put that on your supercharged cammed car? and why ?

They look like little mufflers. They are individual. Not one piece.

[catalan]

Originally Posted by Nitroman28

You need a Fuel pump and injectors. You're to close to the edge. I'm running the ZL1 Pump, ADM FPCM and FIC 60ilb injectors and at 600hp. You have the setup for no headers or cam.

Originally Posted by ITGuy11

Like others mentioned you need:
ZL1 pump
ADM FPCM
ID850 Injectors
OD Rear Cog Drive
Tune from Ted
You will be around 635RWHP

Originally Posted by VADER SS L99

I agree with the above. You need more injector regardless of fuel pump, ZL1 fuel pump, ADM FPCM, 8 PSI and a retune. Magnaflow street catback with get the sound almost stock. I know because I have the GT-11 cam, Kooks 1 7/8 headers with high flow cats and a Magnaflow street catback.

Originally Posted by bmbbl be

my set-up is similiar

L99
Maggie
3.6 pulley
livernois 2c cam ls3 conversion
roto-fab cai
60lb injectors
zl1 feul pump
kooks 1 7/8 headers hf cats
ported heads
magnaflow 3" exhaust

i have 22's on the car and pulled 583rwhp !

Originally Posted by Alvin@PCMofNC

I do a set of 850CC injectors, ZL1 pump, and a rotofab. Those things would likely add 30 rwhp easy.

Not sure about the ADM FPCM but i'll will surely upgrade the pump to a ZL1 pump, go for the 85 lb/hr injectors from FAST (Fuel Air Spark Technology) to stay safe ..

With upgrading the Rear OD ribbed Cogs, i should gain 3psi extra and 1psi from changing the 3.8 to a 3.6 one ..

Since i'm @ 508rwhp and 4.35psi i should gain 4psi extra which will make me @ the 8-9psi range if my not mistaken ??

Do i need anything else to do? Should that be safe with what i'm finally planning to do next? I should not exceed my goal which is 580rwhp.

And thank you all for your feedbacks !!

[Ice Demon]

Originally Posted by catalan

Not sure about the ADM FPCM but i'll will surely upgrade the pump to a ZL1 pump, go for the 85 lb/hr injectors from FAST (Fuel Air Spark Technology) to stay safe ..

With upgrading the Rear OD ribbed Cogs, i should gain 3psi extra and 1psi from changing the 3.8 to a 3.6 one ..

Since i'm @ 508rwhp and 4.35psi i should gain 4psi extra which will make me @ the 8-9psi range if my not mistaken ??

Do i need anything else to do? Should that be safe with what i'm finally planning to do next? I should not exceed my goal which is 580rwhp.

And thank you all for your feedbacks !!

If you upgrade the fuel pump, injectors, cog drive, and pulley like you said above. You should be around 600-620rwhp.

[Jayrcr3]

Originally Posted by catalan

Not sure about the ADM FPCM but i'll will surely upgrade the pump to a ZL1 pump

the ZL1 pump will be useless without the ADM FPCM. I know this from experience and have the data logs to prove it. Its only $200.00, for the controller.


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[Supermaro585HP]

I have a Edelbrock and just put a 3" pulley and ZL1 pump on with 60# injectors. CAI long tubes and cat back. I have thinking about a cam because I only pulled a 524 RWHP. What can would you guys suggest??

[Supermaro585HP]

What is a cog drive??