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Hey guys, I have a 1993 R33 Skyline.

I recently had it converted to manual, at the same time, i had a full service (inc spark plugs), new timing belt and water pump (by NisPro).

The car has 3" catback exhaust, turbotech manual boost controller set at 10psi, VeePort BOV and a HKS mushroom air filter, stock ecu and smic.

When flooring it, the car seems to pick up nicely around 3-4000rpm, but once it gets around 5, the boost guage still reads 10psi, but the car seems to take noticeably longer to get to 7rpm than from 3 to 5rpm. I had a friend with a 32 drive it, and he confirmed, from 5000rpm i've got nothing!

The car isn't hesitating/stuttering/making funny noises, it just seems like it's n/a from 5000rpm onwards.

I'm wanting to work out what's wrong. Jez suggested it could be my coil packs. After reading a few threads on SAU about them, I think i'm going to try and find a working pair to test that theory, what else can i look at?

Thanks guys :laugh:

Isaac

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I had the same problem in my 33. My ecu was richening a/f mixtures and retarding timing. Power FC and a good tune fixed me up, but if i were you id get it on the dyno and get the problem diagnosed that way. Itll save you a lot of money in the long run.

Edited by RB JET

very well could be the bad rich and retard thing... too much air coming in so the stock ecu craps itself - dumps heaps of fuel in and pulls all the timing...

i done a manual conversion 3 years ago and have only just changed my ecu to a manual one(had SAFC2 fitted). it done nothing to the power when flooring it, only cleaned up idling and cruising. you need to get yourself at minimum a SAFC2 and get it tuned.

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