Hi all.
All this talking of huge turbos, monster cars, big hp, etc. etc......
To all of you, guys, seriosly interested in making power upgrades and to whom interested in experimenting engine mods I would strongly recomend fitting an "exhaust gas temperature gauge" (right gauge under steering wheel on picture below) and an "Air-to-fuel meter" (left gauge under steering wheel).
If ex-temps (sensor immediatly after turbo) raise above 830-850°C (which means over 950°C on ex-header) you definitly need to enrich fuel mixtures or, if A/F is OK, you reached max load allowed for actual engine setup.
A/F meter, instead, must read 14.5-14.7 at idle and steady rpm and light load, (~14.7 is stechiometric value), over 16.0 (out of scale in the lean side) in "releasing" conditions, and 13.0-13.5 at full throttle and load.
I have them since last February, and I found them very usefull (allowed me to find and get rid of a bug in my 350hp chipset, just to make an example).
Total cost of both ~140 Euros.
I've used my old 3B black "instrument panel" to fit them under the steering wheel.
Ciao
Marco
All this talking of huge turbos, monster cars, big hp, etc. etc......
To all of you, guys, seriosly interested in making power upgrades and to whom interested in experimenting engine mods I would strongly recomend fitting an "exhaust gas temperature gauge" (right gauge under steering wheel on picture below) and an "Air-to-fuel meter" (left gauge under steering wheel).
If ex-temps (sensor immediatly after turbo) raise above 830-850°C (which means over 950°C on ex-header) you definitly need to enrich fuel mixtures or, if A/F is OK, you reached max load allowed for actual engine setup.
A/F meter, instead, must read 14.5-14.7 at idle and steady rpm and light load, (~14.7 is stechiometric value), over 16.0 (out of scale in the lean side) in "releasing" conditions, and 13.0-13.5 at full throttle and load.
I have them since last February, and I found them very usefull (allowed me to find and get rid of a bug in my 350hp chipset, just to make an example).
Total cost of both ~140 Euros.
I've used my old 3B black "instrument panel" to fit them under the steering wheel.
Ciao
Marco
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