smoothdurban
I do my own stunts
- Joined
- Jan 4, 2013
- Location
- Kemble Ontario
So I have recently changed my setup from a 016 to 012 MAF + added a tune and for the most part the engine performs well but I have noticed a couple of differences in performance from my previous setup
The engine
B230FT on Lh2.4
Stock intake
3" DP exhaust.
New Bosch 0280155968 green injectors
IPD turbo cam
Bosch 3 bar FPR
19T
used 012 MAF
Redblock powered stage #2 tune
The condition
Car starts fine idles at stoich +/- 0.2 AFR's, Accelerates well, from a stand still I hit 18 lbs of boost AFR's are in the mid to high 10's / low 11's
Cruising at level with little throttle input AFR's are between 13.8 & 15.2, It seems to have a hard time zoning in to where it should be.
Passing is where my primary problem lies. Under hard acceleration from 50/80 mph/kph boost comes on hard and most of the time is hesitates / cuts out for an instant. If I roll into the throttle a little slowly this problem doesn't appear it only occurs with a hard / WOT condition in passing. It almost feels like I hit a boost cut or something to that effect. Sudden loss of power then it comes on strong again.
I checked for boost leaks and found a few small ones around the FPR and IAC hoses, nothing to get in a twist over.
Post 164 of my build thread show the air filter set up I have which worked fine with my 855 injectors and 016 MAF and my previous tune with the exception of a lean / ping on throttle tip in https://www.turbobricks.com/index.php?threads/smoothys-242-turbo-build.292243/page-9#post-6275055
Curious if anyone else has experienced anything similar, and how did the remedy it? It seems to go pig rich in this condition like sub 10 AFR's!. I have my suspicions about the MAF and was thinking of building my own 3" from the know good 016 I have.
The engine
B230FT on Lh2.4
Stock intake
3" DP exhaust.
New Bosch 0280155968 green injectors
IPD turbo cam
Bosch 3 bar FPR
19T
used 012 MAF
Redblock powered stage #2 tune
The condition
Car starts fine idles at stoich +/- 0.2 AFR's, Accelerates well, from a stand still I hit 18 lbs of boost AFR's are in the mid to high 10's / low 11's
Cruising at level with little throttle input AFR's are between 13.8 & 15.2, It seems to have a hard time zoning in to where it should be.
Passing is where my primary problem lies. Under hard acceleration from 50/80 mph/kph boost comes on hard and most of the time is hesitates / cuts out for an instant. If I roll into the throttle a little slowly this problem doesn't appear it only occurs with a hard / WOT condition in passing. It almost feels like I hit a boost cut or something to that effect. Sudden loss of power then it comes on strong again.
I checked for boost leaks and found a few small ones around the FPR and IAC hoses, nothing to get in a twist over.
Post 164 of my build thread show the air filter set up I have which worked fine with my 855 injectors and 016 MAF and my previous tune with the exception of a lean / ping on throttle tip in https://www.turbobricks.com/index.php?threads/smoothys-242-turbo-build.292243/page-9#post-6275055
Curious if anyone else has experienced anything similar, and how did the remedy it? It seems to go pig rich in this condition like sub 10 AFR's!. I have my suspicions about the MAF and was thinking of building my own 3" from the know good 016 I have.
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