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52mmTB and NEW IC = Rich


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I installed a custom 52mm TB and a Upgrade bar and plate intercooler with 3in in/out reduced down to 2.5 intercooler pipes..now im running about 3 to 4 bars rich @WOT !!! with a 18g@15psi  .....I do have a 255 walbro fuel pump i installed last year....I guess i can go with a bigger turbo say a gt32 and be safe untill i decide wether or not i will go MPI, im only looking for about 300hp to the wheels anyway...we'll seee!!! :)
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That did not make you richer,getting more air into the engine will make you leaner. You probaly need to check the tps with the other sensors on the tb. you could also have a vac leak. leaking vac line or tb gasket and inj. seals will cause a rich condition.
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That 18g is definately capable of more than 15psi and still staying in its efficiency range.  I wouldn't jump to a gt32 quite so fast.  Also, don't put too much faith in your 02 sensor's readings unless its a wideband.  ;)

 

ADAM

 

Exactly

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