Dyno for H\C\I ls1 GTO
Thread Starter
Teching In
Joined: May 2005
Posts: 42
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From: UNKOWN
Dyno for H\C\I ls1 GTO I went to the dyno few weeks ago to get the car tuned
the first run was awsome the car made 415 hp and 373 trq on 88% of the TB open
after fixing the TB the car made the same numbers and the most we got is 424 hp and 380 trq which i think is low
the car was giving a black smock in all of the runs that we did even when was the afr about 13.1 and the timing is about 27*
even when i tested the car on the rod it did not feel smooth
Moods are:
Air Induction & Exhaust
- K&N Cold Air Intake
- Nick Williams 92mm Throttle Body
- Edelbrock Victor J.r. Intake Manifold
- Edelbrock Low Profile Elbow
- Kooks LongTube Headers
- SLP Loud Mouth II Cat Back Exhaust System
Fuel Management
- EdelBrock Fuel Rails
- Fuel Injectors 42LB
- Walbro 225 Fuel Pump
Engine & Valvetrain
- Mahle Pistons
- ET Cylinder Heads w/ARP Head Studs 225 62cc
- FTI Custom Camshaft (230/240 630/610 110 LSA)
- Heavy Duty Oil Pump
- Chrome-Moly Pushrods
- Double Roller Timing Chain
- ASP Underdrive Pulley
Transmission & Drivetrain
- Auto 4L60E
- Gear Ratio : 3.46
is it a tune problem or that what it should make....?
the first run was awsome the car made 415 hp and 373 trq on 88% of the TB open
after fixing the TB the car made the same numbers and the most we got is 424 hp and 380 trq which i think is low
the car was giving a black smock in all of the runs that we did even when was the afr about 13.1 and the timing is about 27*
even when i tested the car on the rod it did not feel smooth
Moods are:
Air Induction & Exhaust
- K&N Cold Air Intake
- Nick Williams 92mm Throttle Body
- Edelbrock Victor J.r. Intake Manifold
- Edelbrock Low Profile Elbow
- Kooks LongTube Headers
- SLP Loud Mouth II Cat Back Exhaust System
Fuel Management
- EdelBrock Fuel Rails
- Fuel Injectors 42LB
- Walbro 225 Fuel Pump
Engine & Valvetrain
- Mahle Pistons
- ET Cylinder Heads w/ARP Head Studs 225 62cc
- FTI Custom Camshaft (230/240 630/610 110 LSA)
- Heavy Duty Oil Pump
- Chrome-Moly Pushrods
- Double Roller Timing Chain
- ASP Underdrive Pulley
Transmission & Drivetrain
- Auto 4L60E
- Gear Ratio : 3.46
is it a tune problem or that what it should make....?
Hello ZaHeR ,
I see that it is nice numbers with low-profile elbow ! .. low-profile elbow is a big restriction , try other elbow that used for FI setups
In general elbows are restrictions even if they are bigger than Low-Profile elbow ! .. cause in N/A application nothing force the air to the first cylinders ( 1st cylinder & 2nd cylinder ) after more than 180ْ of rotating !
So if you have a chance to 4 barrel TB go for it ZaaaaHeeeeR
Also ported Victor Jr can make a big sence
I see that it is nice numbers with low-profile elbow ! .. low-profile elbow is a big restriction , try other elbow that used for FI setups
In general elbows are restrictions even if they are bigger than Low-Profile elbow ! .. cause in N/A application nothing force the air to the first cylinders ( 1st cylinder & 2nd cylinder ) after more than 180ْ of rotating !
So if you have a chance to 4 barrel TB go for it ZaaaaHeeeeR
Also ported Victor Jr can make a big sence
I think cold zero got it...plus youre an auto. Try the track and see the results, then you can say if its fast or not 
and maybe a cutout too?
Post dyno sheet, maybe some tech guys can see something wrong.
and maybe a cutout too?Post dyno sheet, maybe some tech guys can see something wrong.
Staging Lane
Joined: Feb 2010
Posts: 73
Likes: 0
From: Camby, IN
was this on a mustang dyno? I would think a H/C/I LS1 GTO would make 440-460 on a dynojet but the numbers seem about right on a mustang dyno. The only sure way to really tell if it is running right is to take it to the track.
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Thread Starter
Teching In
Joined: May 2005
Posts: 42
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From: UNKOWN
the thing is it is a dyno jet
i would go to the track but unfortunately here in meddle east the track is open in specific days in the year for the test so when it is open i will see how she goes.
I'll post the dyno sheet soon
i would go to the track but unfortunately here in meddle east the track is open in specific days in the year for the test so when it is open i will see how she goes.
I'll post the dyno sheet soon
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Teching In
Joined: May 2005
Posts: 42
Likes: 0
From: UNKOWN
here is a quick vids
a cold start
http://www.youtube.com/watch?v=9ITLFg3t92E
baseline run
http://www.youtube.com/watch?v=avLKVT8pibY
a cold start
http://www.youtube.com/watch?v=9ITLFg3t92E
baseline run
http://www.youtube.com/watch?v=avLKVT8pibY
TECH Regular
Joined: Dec 2003
Posts: 486
Likes: 0
From: Cherry Hill, New Jersey State
Bro
as stated before, and evident from alot of threads, that elbow will take from 30 ~ 60 hp, also the 4 bbl manifold require porting since the Victor J flowed and found maximum was 275cfm if not mistaken. The Accuafab 4150 will do more than the job needed (flow to alomst 1000 cfm). additionally your tune need to be checked, I'm not an expert, but from what I see in the LS1tech threads that 12.4 to 12.8 is common with performance cars on the LS1 engine, but as I say I'm not an expert. With the above job if done, you will be in the 480rwhp mark margin or more, and the thing will be a beast to drive...
bythe way, are you from JED or RIYA or DAM...
as stated before, and evident from alot of threads, that elbow will take from 30 ~ 60 hp, also the 4 bbl manifold require porting since the Victor J flowed and found maximum was 275cfm if not mistaken. The Accuafab 4150 will do more than the job needed (flow to alomst 1000 cfm). additionally your tune need to be checked, I'm not an expert, but from what I see in the LS1tech threads that 12.4 to 12.8 is common with performance cars on the LS1 engine, but as I say I'm not an expert. With the above job if done, you will be in the 480rwhp mark margin or more, and the thing will be a beast to drive...
bythe way, are you from JED or RIYA or DAM...
oh and this is thru a A4 with a 4K stall so yea i think his combo is either way low on power,bad tune,or completely wrong combination for the motor?
Thread Starter
Teching In
Joined: May 2005
Posts: 42
Likes: 0
From: UNKOWN
Bro
as stated before, and evident from alot of threads, that elbow will take from 30 ~ 60 hp, also the 4 bbl manifold require porting since the Victor J flowed and found maximum was 275cfm if not mistaken. The Accuafab 4150 will do more than the job needed (flow to alomst 1000 cfm). additionally your tune need to be checked, I'm not an expert, but from what I see in the LS1tech threads that 12.4 to 12.8 is common with performance cars on the LS1 engine, but as I say I'm not an expert. With the above job if done, you will be in the 480rwhp mark margin or more, and the thing will be a beast to drive...
bythe way, are you from JED or RIYA or DAM...
as stated before, and evident from alot of threads, that elbow will take from 30 ~ 60 hp, also the 4 bbl manifold require porting since the Victor J flowed and found maximum was 275cfm if not mistaken. The Accuafab 4150 will do more than the job needed (flow to alomst 1000 cfm). additionally your tune need to be checked, I'm not an expert, but from what I see in the LS1tech threads that 12.4 to 12.8 is common with performance cars on the LS1 engine, but as I say I'm not an expert. With the above job if done, you will be in the 480rwhp mark margin or more, and the thing will be a beast to drive...
bythe way, are you from JED or RIYA or DAM...
and i'm from Qatif
