please help whats wrong with this log

[bttwracing86T]

ok so looking at this latest log im seeing it still takes entirely to long to build up to 10 psi at launch its like the car is insane after 3500 rpm on up. but bottom end still aint there.

 

[Pronto]

Might be too rich down low or an exhaust leak...

 

[bttwracing86T]

ok so this is low boost and no alky someone recomended i do this. still think its rich on low end

 

[Eric Stage I]

Doesn't look rich at all to me. Your A/F was in the mid 12's while you were trying to spool. Looks like you either have a converter that's too tight, or a wastegate problem.

Looks like your brake stall is about 2200-2300 at 0psi, which seems low for that turbo.

 

[bttwracing86T]

i did blow out the wheel cylinder on that log to think that maybe part of issue

 

[bttwracing86T]

i checked wastegate no leak of pressure so its good. converter is new from dave husek but im afraid you maybe right eric. as soon as i can change out wheel cylinder again ill make a few more logged runs and make sure you still think that just because i dont want to take a trans out again

 

[bttwracing86T]

Doesn't look rich at all to me. Your A/F was in the mid 12's while you were trying to spool. Looks like you either have a converter that's too tight, or a wastegate problem.

Looks like your brake stall is about 2200-2300 at 0psi, which seems low for that turbo.

with the wheel cylinder blowing its thrown that all off usually dea on 3200 @ 0 psi

 

[Amelio]

Tim,

Eric is probably spot on.....this is what I suspected a month ago at the Buick meet.......if you remember I had the same exact issue with my car after I installed a brand new PTC. I pulled it back out of the car and sent it back for them to re-stall it.

That fixed the issue and the car spools fast.....it sucks to have to pull the converter back out but that may be necessary.......

When I rode in your car it felt good but it is hard to determine a slow spool issue from a brake stall when you blow the tires off... (remember how I explained the "No load" issue)

For a seat of the pants test....you should be able to hit the throttle from a dead stop no stalling.....if the converter is working right the car should roll 1-2 car lengths and the converter should hit which would results in serious wheel spin or as I call it fun!

Get you wheel cylinder fixed and post up another log to have a good solid reading....you should be able to see exactly where the converter flashes....mine hits right about 3300 which is perfect....yours should be every bit of that!

 

[bttwracing86T]

we will do it thanks