Dbilas vs Extruabody ITBs

[digger]

Digger, the only reason I revived this thread was because the Extrudabody has always been doubted, or bundled in with the other major mfgr's for power guesstimates. Even with the mis-matched Rowland carb manifolds, they did produce in the end.


I tried. I was the one who did all the R&D for the 24v kits and bugged them about the m20, instead they did m10 SMH. In honesty, they will be out priced by RHD for similar results. I can say, though, their quality is superior - spin castings, linkage etc are all top notch.

The back to back of one of Ramas customers who went from EXTA to RHD justified the lumping of the EXTA with dbilas. There were some substantial gains reported by swapping out the EXT and this was the only real results that were publically available on the main forums

I look at the area under the curve and feel that the stock manifold would make a fair bit more midrange than EXTA but less at the top end. The lower midrange IMO is pretty big tradeoff that simply doesn’t need to be made. FOr a street vehicle i would stick with stock rather than a system the kills the midrange with no torque below 5200rpm in order to gain 20whp

The jenvey stuff is excellent quality and has more features than the RHD but I like the RHD linkage setup better, its just so simple.

[ForcedFirebird]

There was no loss of TQ with my example (TQ was surprisingly flat), but you are right, only way to truly know is a back to back.

[digger]

There was no loss of TQ with my example (TQ was surprisingly flat), but you are right, only way to truly know is a back to back.

there is no midrange at all, where has the torque gone then?