Passed Texas E Tests
Thread Starter
Joined: Feb 2001
Posts: 7,941
Likes: 133
From: In A Disfunctional World
Passed Texas E Tests
A-Spec GT35R kit, Air Pump, and CAT:
On the first run:
passed the 25MPH test with room too spare.
failed the 15MPH test with too many HCs but almost no NOs. The HCs were only about 50 too high.
So I told them let me make an adjustment and do my one free rerun now.
Before the test, I had run the rpms and speeds on the road and leaned the areas some. As I had monitored the first run, I observed that their dyno loads the engine about two P rows more than real life driving does for the same speed!
So I had actually leaned out cells above were it was needed. Took out 5% fuel around (P7,N3) and we reran the test.
The HCs dropped a lot and the NOs went up. But now both speeds passed with much room to spare.
This is with stock intake ports and street exhaust porting. Did not even add alcohol or replace my under drive pulleys.
On the first run:
passed the 25MPH test with room too spare.
failed the 15MPH test with too many HCs but almost no NOs. The HCs were only about 50 too high.
So I told them let me make an adjustment and do my one free rerun now.
Before the test, I had run the rpms and speeds on the road and leaned the areas some. As I had monitored the first run, I observed that their dyno loads the engine about two P rows more than real life driving does for the same speed!
So I had actually leaned out cells above were it was needed. Took out 5% fuel around (P7,N3) and we reran the test.
The HCs dropped a lot and the NOs went up. But now both speeds passed with much room to spare.
This is with stock intake ports and street exhaust porting. Did not even add alcohol or replace my under drive pulleys.
Originally Posted by cewrx7r1
A-Spec GT35R kit, Air Pump, and CAT:
On the first run:
passed the 25MPH test with room too spare.
failed the 15MPH test with too many HCs but almost no NOs. The HCs were only about 50 too high.
So I told them let me make an adjustment and do my one free rerun now.
Before the test, I had run the rpms and speeds on the road and leaned the areas some. As I had monitored the first run, I observed that their dyno loads the engine about two P rows more than real life driving does for the same speed!
So I had actually leaned out cells above were it was needed. Took out 5% fuel around (P7,N3) and we reran the test.
The HCs dropped a lot and the NOs went up. But now both speeds passed with much room to spare.
This is with stock intake ports and street exhaust porting. Did not even add alcohol or replace my under drive pulleys.
On the first run:
passed the 25MPH test with room too spare.
failed the 15MPH test with too many HCs but almost no NOs. The HCs were only about 50 too high.
So I told them let me make an adjustment and do my one free rerun now.
Before the test, I had run the rpms and speeds on the road and leaned the areas some. As I had monitored the first run, I observed that their dyno loads the engine about two P rows more than real life driving does for the same speed!
So I had actually leaned out cells above were it was needed. Took out 5% fuel around (P7,N3) and we reran the test.
The HCs dropped a lot and the NOs went up. But now both speeds passed with much room to spare.
This is with stock intake ports and street exhaust porting. Did not even add alcohol or replace my under drive pulleys.
Two questions though...
1-What cat are you using?
2-What timing where you running on 15\25mph?
Thread Starter
Joined: Feb 2001
Posts: 7,941
Likes: 133
From: In A Disfunctional World
1) Bonez from Rotary Performance in Dallas. Got it three years ago.
If I had to get a new one, it would be a metal substrate as they require less
heat and are suppose to work better with less back pressure.
2)Stock IGL but 15 split for P1-5,N1-5; 8 split for one cell beyond that area, then 3 split until boost.
If I had to get a new one, it would be a metal substrate as they require less
heat and are suppose to work better with less back pressure.
2)Stock IGL but 15 split for P1-5,N1-5; 8 split for one cell beyond that area, then 3 split until boost.
Originally Posted by KNONFS
Congrats!
Two questions though...
1-What cat are you using?
2-What timing where you running on 15\25mph?
Two questions though...
1-What cat are you using?
2-What timing where you running on 15\25mph?
Originally Posted by cewrx7r1
1) Bonez from Rotary Performance in Dallas. Got it three years ago.
If I had to get a new one, it would be a metal substrate as they require less
heat and are suppose to work better with less back pressure.
2)Stock IGL but 15 split for P1-5,N1-5; 8 split for one cell beyond that area, then 3 split until boost.
If I had to get a new one, it would be a metal substrate as they require less
heat and are suppose to work better with less back pressure.
2)Stock IGL but 15 split for P1-5,N1-5; 8 split for one cell beyond that area, then 3 split until boost.
The reason I ask is, becuase I am using a dynomax high flow cat; and I don't think is doing much in terms of pollusion. The car is actually louder with the cat on than it is with the MP. Thanks for the ignition info, I also ran stock timing on my FC.
Rotary Enthusiast
Joined: Feb 2001
Posts: 1,094
Likes: 0
From: Orange County, CA
Great job Chuck!
I've got the Metallit main cat and it has the piping for the air pump, so hopefully that will help the oxidation process even more.
I hope I can do the same even with larger street porting.
I've got the Metallit main cat and it has the piping for the air pump, so hopefully that will help the oxidation process even more.
I hope I can do the same even with larger street porting.
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Thread Starter
Joined: Feb 2001
Posts: 7,941
Likes: 133
From: In A Disfunctional World
Here are my test results:
SPEED---STD HC---MY HC----STD NOX---MY NOX
-----------------------------------------------------------
15mph---136-------92---------1045-------322
25mph---132-------63--------- 945--------462
You can see I was much leaner at 25mph as NOX was higher due to higher
combustion temperatures. If I was to run 10% ethanol, HC would go down
and I think NOX would also. I think it is posible to pass with street porting if the ovelap is small and the major porting is to the secondary intakes.
I did not mentioned that I was running B8EGVs plugs on the stock ignition as inductive fires hotter at low rpms than CD.
SPEED---STD HC---MY HC----STD NOX---MY NOX
-----------------------------------------------------------
15mph---136-------92---------1045-------322
25mph---132-------63--------- 945--------462
You can see I was much leaner at 25mph as NOX was higher due to higher
combustion temperatures. If I was to run 10% ethanol, HC would go down
and I think NOX would also. I think it is posible to pass with street porting if the ovelap is small and the major porting is to the secondary intakes.
I did not mentioned that I was running B8EGVs plugs on the stock ignition as inductive fires hotter at low rpms than CD.
Last edited by cewrx7r1; Jun 3, 2005 at 12:54 PM.
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