Quote:
Originally Posted by mangostick
what makes this car different from any other gasoline powered engine?
UEL with short tubes doesn't make the same power.. they just dont. I could get into the science of why but the only guys here going to get it are the Nameless crew and maybe a few others.
Long tube equal length headers have been making more power on various applications since the dawn of the combustion engine. Its not going to change any time soon.
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We can start with what the engine ECU needs to get information about fuel requirements. It needs an airflow reference (the MAF) and a combustion efficiency reference (the O2 sensor). Both of which are reading averages. But on an UEL header it is not scavenging equally on both banks. So if you need 12.5:1 AFR for best power on a UEL one bank may be at 12:1 and the other at 13:1.
To the UEL fans, ask yourselves if you have ever seen an UEL intake manifold...