Tuning greddy profec B
#1
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Tuning greddy profec B
i recently started tuning my greddy profec b. i was tuning for 10 psi. i have a pfc, downpipe and exhaust. i have the poor mans non seq. boost would come on around 3500rpm and hit .7bar(10.15psi) then as it went to 4-4500rpm it would drop to .6 psi ( around 9 spi). im wondering is this normal? i thought boost would hold but it seesm to drop. i was also tuning for sharpness but it did not seem to help all it did was increase boost when i tured it to the sharper side. if anyone has suggestions any help would be appreciated. thanks
#2
needs more track time
iTrader: (16)
Not sure about non-seq, but..
What is the condition of your main cat? You can check it by removing the front 2 bolts and shining a flash light in there. if it looks like nice clean honeycomb, mesh then its goodl. If it looks like a clogged shower drain, its bad.
What is the condition of your main cat? You can check it by removing the front 2 bolts and shining a flash light in there. if it looks like nice clean honeycomb, mesh then its goodl. If it looks like a clogged shower drain, its bad.
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i dont think it was the cat .when i bought it, it was in good condition and i havent been driving the car that much since. al, do you think a clogged cat would lead to a drop in boost?
#6
needs more track time
iTrader: (16)
Originally Posted by mdude
i dont think it was the cat .when i bought it, it was in good condition and i havent been driving the car that much since. al, do you think a clogged cat would lead to a drop in boost?
That was the culprit for me when I had an issue with not enough boost on the secondary as the RPMs went up. Couldn't get enough air out of the exhaust b/c of the clogged cat.
I don't know much about non-seq so that is the only thing I suggest that you might want to check out.
Good luck.