orginal yaris 2005 1,5 turbo 150hk

[mrloseth]

hello castrex, i got one question for you if you know, the do you know if the first muffler after the turbo is an catlysator? or just an filter ?
i im just wondering if there is any help to remove it.

[CASTREX]

Originally Posted by mrloseth

hello castrex, i got one question for you if you know, the do you know if the first muffler after the turbo is an catlysator? or just an filter ?
i im just wondering if there is any help to remove it.

Yes, that is a cat.

If you don't need to take the gar for inspection you can remove it. It's usually ilegal in many places. Not sure in your country.

You can probbaly gain a couple extra HP taking the cat out. You can also replace it with a high flow race cat.

[mrloseth]

Originally Posted by CASTREX

Yes, that is a cat.

If you don't need to take the gar for inspection you can remove it. It's usually ilegal in many places. Not sure in your country.

You can probbaly gain a couple extra HP taking the cat out. You can also replace it with a high flow race cat.

okey, i was thinking off removing the cat number two att first,:) i did install an aem wideband yesturday, and att full throttle att 3-4 gear the messure was 10,0 att 4500-6200rpm the aem doesent messure lower:/ so i think i have enought fuel, , i have stock boost and stock exhaust now.

[mrloseth]

yesturday i did messure my wideband..the results: started att 1500rpm on 5gear messurements: 1700rpm 13,0....1900rpm 13,3....2300rpm 13,4....2500rpm 13,7...... 2700rpm 13,9..... 2800rpm.14,0....3000rpm-13,5...3200rpm 12,0... 3500rpm 11.8.... 3800rpm-10.7...4000-6200 rpm 10,0

castrex : what do think? this messure are with stock boost.
i think maybe it a bit lean att 2800 rpm?
what would hapen if i bouild exhaust?

im going to do an new messure today and see if i do get the same

[CASTREX]

Originally Posted by mrloseth

yesturday i did messure my wideband..the results: started att 1500rpm on 5gear messurements: 1700rpm 13,0....1900rpm 13,3....2300rpm 13,4....2500rpm 13,7...... 2700rpm 13,9..... 2800rpm.14,0....3000rpm-13,5...3200rpm 12,0... 3500rpm 11.8.... 3800rpm-10.7...4000-6200 rpm 10,0

castrex : what do think? this messure are with stock boost.
i think maybe it a bit lean att 2800 rpm?
what would hapen if i bouild exhaust?

im going to do an new messure today and see if i do get the same

These numbers don't tell much unless you can add the boost figures also. It does a bit lean at 2800 as you said if you are indeed boosting at that RPMS.

It does also look quite rich at the top end... if you could lean that out you will gain some power up top.

How many psi are you seeing at 2500/2800 rpm?

Overall it doesn't look bad. You have enough fuel obviously. Some fine tuning would help. Why don't you try getting a SAFC or a greddy emange? You should be fine if you build a full exhaust.

[mrloseth]

Originally Posted by CASTREX

These numbers don't tell much unless you can add the boost figures also. It does a bit lean at 2800 as you said if you are indeed boosting at that RPMS.

It does also look quite rich at the top end... if you could lean that out you will gain some power up top.

How many psi are you seeing at 2500/2800 rpm?

Overall it doesn't look bad. You have enough fuel obviously. Some fine tuning would help. Why don't you try getting a SAFC or a greddy emange? You should be fine if you build a full exhaust.

i got 0,5 bar boost at 1700 rpm and i have the same boost att 6200 rpm.. the car is now totaly stock.. so you think that it wouldnt be a problem to bouild exhaust now?:)

[CASTREX]

Originally Posted by mrloseth

i got 0,5 bar boost at 1700 rpm and i have the same boost att 6200 rpm.. the car is now totaly stock.. so you think that it wouldnt be a problem to bouild exhaust now?:)

if you are running stock boost on the original ECU you are OK to build an exhaust.

OK so you are hitting full boost at 1,700rpm so it seems like you are running a bit lean from 1,700rpm to above 3,200rpm I would still think about some sort of management like a emanage, SAFC, AEM FIC so you can load a smother curve. But overll you seem to be fine. TRD knows what they are doing... and as long as you don't raise the boost, an aftermarket exhaust should not be a problem.