Xtreme STS dyno graph
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Interesting progression.
Looks like boost point starts at 2500rpms, making 1# by 3K rpms, 1.9 (2)# by 3500 and max boost by 5900K rpms. I think its safe to say that it will pull all the way to redline.
Chad are you tuning now or is Mike?
Looks like boost point starts at 2500rpms, making 1# by 3K rpms, 1.9 (2)# by 3500 and max boost by 5900K rpms. I think its safe to say that it will pull all the way to redline.
Chad are you tuning now or is Mike?
Drifting
Joined: Nov 2005
Posts: 1,629
Likes: 15
Chad;
a) How much max boost are you getting?
b) What other mods are on this car?
c) Is this a Z06?
d) For Z06 with LG LT, Matrix CATS and Xpipe what numbers do you think you would get?
e) When running on dyno, did you observe how much vibration the turbos were getting?
Thanks!
..Ben
a) How much max boost are you getting?
b) What other mods are on this car?
c) Is this a Z06?
d) For Z06 with LG LT, Matrix CATS and Xpipe what numbers do you think you would get?
e) When running on dyno, did you observe how much vibration the turbos were getting?
Thanks!
..Ben
Thread Starter
Burning Brakes
Joined: Apr 2005
Posts: 768
Likes: 0
From: Lubbock TX
St. Jude Donor '06
RoadRebel--Thanks for the kind words, Sir.
Shinobi'sZ--Hum, Ancient Chinese Secret, Grasshopper
bernrex--wastegates are stock from STS. This was a customer supplied kit.
Z_Rocks--A) The dyno shows 5.5 lbs at 6.5 rpm before spike.
B) Bone Stock 2004 ZO6
C) See above answer
D) With better flowing exhaust you might be able to hit 550 rwhp
E) Did not watch the turbos move as a rock coming off the tire at 145 mph on the dyno might put a hole in someones head.
Chad
Shinobi'sZ--Hum, Ancient Chinese Secret, Grasshopper
bernrex--wastegates are stock from STS. This was a customer supplied kit.
Z_Rocks--A) The dyno shows 5.5 lbs at 6.5 rpm before spike.
B) Bone Stock 2004 ZO6
C) See above answer
D) With better flowing exhaust you might be able to hit 550 rwhp
E) Did not watch the turbos move as a rock coming off the tire at 145 mph on the dyno might put a hole in someones head.
Chad
Team Owner
Joined: Jul 2002
Posts: 37,038
Likes: 69
From: This city NEVER sleeps! Frank's back yard!
Originally Posted by chad@xtreme
E) Did not watch the turbos move as a rock coming off the tire at 145 mph on the dyno might put a hole in someones head.
Chad
Chad
Don't be a wuss! Get down there and tell us what you see!
Racer
Joined: Nov 2005
Posts: 348
Likes: 8
From: CT
Nice job.
The graph and the way the boost builds is like a centrifugal SC, similar to the 12.5 psi stroker STS graph that was posted. It almost looks like they should try using smaller a/r turbines to spool the turbos earlier.
Very interesting, thank you for posting.
The graph and the way the boost builds is like a centrifugal SC, similar to the 12.5 psi stroker STS graph that was posted. It almost looks like they should try using smaller a/r turbines to spool the turbos earlier.
Very interesting, thank you for posting.
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Drifting
Joined: Aug 2004
Posts: 1,898
Likes: 0
ya no i wish this was my first kit to sample turbo's on c5 !!!! this kit with a little aly and auto[ mother ] my 427 next year would rock .. anyone whata let me use there dog house cause that's were i'd be livin if my wife new i was thinking this
Melting Slicks
Joined: May 2003
Posts: 2,851
Likes: 1
From: San Bruno Ca
Hi Chad,
I think that you might find that this kit is sensitive to the Cats, if you remove them, I think you will find big HP, but lots of noise.
My hp numbers are a bit high because my car is a modded C-5. I have Lingenfelter LS-6 heads and a small cam. and shorty headers.
I was making 410 rwhp before the install.
I think that you might find that this kit is sensitive to the Cats, if you remove them, I think you will find big HP, but lots of noise.
My hp numbers are a bit high because my car is a modded C-5. I have Lingenfelter LS-6 heads and a small cam. and shorty headers.
I was making 410 rwhp before the install.
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Originally Posted by Scubanme
Sheesh, the guy does not make enough money to take those chances!
lol lol
Somebody should have told that to Bill Reid when he was going underneath my car to see if the interal wastegates on the TTi system were being pushed open.
Le Mans Master
Joined: Nov 2000
Posts: 7,391
Likes: 3
From: Chandler AZ
Originally Posted by Shinobi'sZ
lol lol
Somebody should have told that to Bill Reid when he was going underneath my car to see if the interal wastegates on the TTi system were being pushed open.
Somebody should have told that to Bill Reid when he was going underneath my car to see if the interal wastegates on the TTi system were being pushed open.
... and they were being pushed open... and it was crazy loud underneath there - I have a permanant ringing sound of turbo's spooled in my ears 
... not mention just a little unsafe 
Bill
Racer
Joined: Sep 2005
Posts: 341
Likes: 2
Did you follow the official STS recommended method of dyno tuning an STS system? For example, getting the whole exhaust system ht first, venting the wastgate to behind the bumper, removing the taillights, etc?
I ask because for one thing, I hit full boost (set at the stock spring rate ~6 lbs) under 3k in 4th gear. Your graph shows very differently. Maybe the turbos were not hot enough to spool quickly.
Tommy
I ask because for one thing, I hit full boost (set at the stock spring rate ~6 lbs) under 3k in 4th gear. Your graph shows very differently. Maybe the turbos were not hot enough to spool quickly.
Tommy
Last edited by TaTommy888; Dec 19, 2005 at 01:22 PM.
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Originally Posted by TaTommy888
Did you follow the official STS recommended method of dyno tuning an STS system? For example, getting the whole exhaust system ht first, venting the wastgate to behind the bumper, removing the taillights, etc?
I ask because for one thing, I hit full boost (set at the stock spring rate ~6 lbs) under 3k in 4th gear. Your graph shows very differently. Maybe the turbos were not hot enough to spool quickly.
Tommy
I ask because for one thing, I hit full boost (set at the stock spring rate ~6 lbs) under 3k in 4th gear. Your graph shows very differently. Maybe the turbos were not hot enough to spool quickly.
Tommy
Its nice to hear that at least with one application, the STS kit is spooling to max boost under or @3K rpms. Do you have your graph, it would be interesting to compare the two.
It was a little disconcerting to see this dyno graph. 1.9lbs of boost @3500 rpms.
Racer
Joined: Sep 2005
Posts: 341
Likes: 2
Nope. No dyno for me yet. I live in NY, the weather sucks, my job sucks, xmas shopping sucks, etc... I just fixed a problem I was having with one of my injectors (I just put a new set of 8 in yesterday.) I just have not had the time.
That said, I have a boost gauge and a wideband O2 (LC-1), in my car, so I can monitor it while driving. On the highway (with my new tires that actually have traction!), full boost comes on very early. I think the temperature of the exhaust system and turbos is key. I like to drive hard, so I know my turbos are HOT
Tommy
That said, I have a boost gauge and a wideband O2 (LC-1), in my car, so I can monitor it while driving. On the highway (with my new tires that actually have traction!), full boost comes on very early. I think the temperature of the exhaust system and turbos is key. I like to drive hard, so I know my turbos are HOT
Tommy
Le Mans Master
Joined: Sep 2000
Posts: 6,976
Likes: 527
From: Clouds Over California
Originally Posted by TaTommy888
Nope. No dyno for me yet. I live in NY, the weather sucks, my job sucks, xmas shopping sucks, etc... I just fixed a problem I was having with one of my injectors (I just put a new set of 8 in yesterday.) I just have not had the time.
That said, I have a boost gauge and a wideband O2 (LC-1), in my car, so I can monitor it while driving. On the highway (with my new tires that actually have traction!), full boost comes on very early. I think the temperature of the exhaust system and turbos is key. I like to drive hard, so I know my turbos are HOT
Tommy
That said, I have a boost gauge and a wideband O2 (LC-1), in my car, so I can monitor it while driving. On the highway (with my new tires that actually have traction!), full boost comes on very early. I think the temperature of the exhaust system and turbos is key. I like to drive hard, so I know my turbos are HOT
Tommy
Its different depending on the weight of the vehicle also. With the dynojet measuring inertia, the weight must be factored in more. Each drum weights 1600lbs, there are 2 drums, totalling 3200lbs. So it is fairly close to most C5s for 1:1 ratio and if nobody is playing dyno tricks it is a useful tool for tuning.
However if you can tune on the street and the dyno that is ideal. Charlie..A&As tuner used to primarily tune by running the car on the street. He uses both now and has a load cell for the dynojet...eddy current...loads similar to a Mustang Dyno.
Anyway it is a positive for STS that you are getting some good results.
I read your sig and you have an 03 Z with just the STS system on it..right??
Starting in 02 the stock exhaust system was dramatically improved. Elimination of the
pup cats and better flowing Cats made a large difference in performance. Apart from the cats same H pipe though.
Phoenix doesn't ever get as cold as New York.
Thread Starter
Burning Brakes
Joined: Apr 2005
Posts: 768
Likes: 0
From: Lubbock TX
St. Jude Donor '06
I understand the following the heat cycle for the exhaust. That run was our 3rd within 1 hr. Are you going to run the car down the street with no rear taillight? Our Dyno is above ground and I see no need for venting the wastegate.
Chad
Chad