Wierd boost issue. FIXED!
Here's my set up.
357 Windsor, 8.5:1, custom cammotion turbo cam, Canfield avenger stg3 heads, victor Jr. Intake, Holley 750 built by Brent Davis (crutch). Twin t-70 turbos with .68 ex housings. Fully built 4r70w trans 3.27 gears, 275/69/15 MT dr's.
Same me setup I've had for a long time except I upgraded the old 57mm turbos to twin t-70s. Also swapped my old race c4 for the 4r70w. I've only had it out for a few weeks. Have NOT went WOT yet, my wide band died and I haven't installed my new one. Anyway when I get to 2700-3000 rpm the turbos start bleeding off, sounds like a bov but it's coming from the turbos and it alternates from the drivers side to the pass side. Very wierd.. My old turbos never did this. I do have small filters on them I wonder if they are choking the turbos? It's almost like they are to the point of making boost but not quite and they start popping off... And one else have this happen?? Did a burnout in 1st gear and it didn't do this just when I shifted into 2nd gear it started chirping.. It's got plenty of power.. Feels like it just wants to go WOT,,, At 55 mph in 3rd gear half to 3/4 throttle its hauling ass but still "chirping" the boost gauge bounces from 5-10 psi..
Turbos too big?
Two turbos and a carb...