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was giving the car a boot load last nite and it did something it hasnt done before

changing from 1st to 2nd the car sort of shuddered, or dipped in power

before accelerating normally

it was quite violent

sort of half through you forward, and then powered up normally, all the way to redline in second gear

havent noticed it before

would that be a miss?

was almost all the way to redline in 1st, then gear change, dip/stall and then normal acceleration

was certainly cooler air around last nite

no weird readings on pfc hand controller

edit:

car is r33, stock turbo at 12psi, powerfc, hks exhaust cam gear, exhaust, dump pipe, usual mods

had new plugs put in 20000ks ago to get rid of a miss at higher than stock boost

Edited by Spook's_Skyline
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bump, no one seen anyhting like this before?

the dip happens getting on full throttle in second gear after changing into it

car holds up for a second, and then accelerates normally (and quickly and smoothly to redline again)

also have walbro fuel pump

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check the knock readings on the pfc.

did it ping as soon as you got into 2nd?

if so your map might be a bit lean going into hard gear changes when you stamp on the throttle changes for a split second.

If this is the case a bit more fuel will help at that particular address.

hope this helps :huh:

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i didnt get a tune before the cam gear pulley

but i got 192rwkw with what i have

how can i tell if its coil packs?

if im cruising in second at 40km/h and nail it, it accelerates smoothly all the way to redline

its only an issue when im full on it in first, and then to second

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