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afr readings help


wilkorangerover

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Hi guys on saturday i bought and fitted a wideband afr gauge

to my hks to4r single, hks fcon pro ecu, automatic supra

 

i have just been on the bypass tonight checking the readings

 

tick over 10.5

 

3rd gear at 1500 12.4

at 2000 - 5000 13.1

6000 to top revs 10.9

 

max boost is 1.3 bar at the minute :)

 

 

can someone help me understand whats happening / what i need to do next, cheers

Edited by wilkorangerover (see edit history)
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first post edited 6000 until it hits the limiter

 

it was running 1.1 bar and running in the 11`s in every rev range

 

just 10.5 on tick over

 

 

only did 2 very short runs on 1.3 bar

 

i`ll be changing it back to 1.1 until i get another ecu ;)

 

 

At 1.1bar it sounds ok, is the 10.5 on tickover when its warm or cold or both?

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Did you up the boost, what is the boost control, your AFR's sound ok at 1.1 bar, perhaps 1.3 was never mapped, if that is the case it is a shame because the T04R needs more boost to come in to its own, you auto box wont like it however so 1.1 bar may be the best place to stay

 

1.3 was more like it ;)

 

what boost can the autobox handle???

 

if a ecu comes up for sale somebody give me a shout ;) (or its 75 pound per hour at tdi

)

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It should be about 14.4 on tick over when warm, 10.5 is way too rich.

 

Depends if it was a warm or cold idle, but like you I assume not!

 

We either need a lot more detailed information (which from wilko isn't going to happen), or it needs taking to a mapper, or a new ECU.

 

Wilko, it's your call ;)

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so 1.3 should be ok?

 

id like a good 1.2 /1.3 ideally :sly:

 

Whats the full spec of the car, that would help ?

 

A well set up T04R at 1.3 bar will make around 500 Fly BHP, it will be testing the Auto box at this level, I would say a transmission cooler is a must

 

What injectors are fitted

 

What intercooler do you have, uprated fuel pump?

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Whats the full spec of the car, that would help ?

 

A well set up T04R at 1.3 bar will make around 500 Fly BHP, it will be testing the Auto box at this level, I would say a transmission cooler is a must

 

What injectors are fitted

 

What intercooler do you have, uprated fuel pump?

 

red injectors (apexi displays 41% on the injector duty)

huge greddy intercooler

stillway exhaust (jap racing cat)

fuel pump

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i am looking at aem ecus are they ok??

 

I would stop and take a deep breath before you spend any more money :)

 

You have an ECU already so getting this mapped correctly would be the obvious option, you also need to get a tuner to investigate the full spec as the car will be mapped to this spec, I would talk to an F Con mapper and go from there, dont go and buy an AEM until you know what your options are with the current set up

Edited by tooquicktostop (see edit history)
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