Quote:
Originally Posted by EDFHOBBIES
Remember I tested all after tuning do you have a tune on top of stock box or rotofab.. matt said that the afr never changed enough to justify changing the tune. While makin street passes with vararam the afr moved a little and the iats were cooler. The runs felt stronger with his prototyoe the next stage is dymo data to see of there is any power.
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I was referring to what I saw bolting on the Roto-Fab with the stock tune. I didn’t have my wideband installed at the time, so I can’t say the exact changes in lambda from just the intake. But it definitely caused a loss of boost vs my stock airbox. This was caused by throttle closure. After doing some minor tuning, it picked up around a pound of boost vs stock. Probably +2 psi over what I was seeing with the Roto-Fab on the stock tune.
Anyway, I guess my point is that there is probably more going on here than just the intakes themselves. Simply looking at MAF data and boost can be misleading as I found out. My car trapped almost 133 mph in +1300 DA with basically just a set of headers and the Roto-Fab intake + minor tuning. So the power is definitely there.