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> Turbo -> NA: Problems
post Mar 9, 2005 - 12:51 PM
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erics1one



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Well I finally took the turbo off, for many different reasons. One is that I feel my engine is about done. I still have my Vortec Fuel Presure Reg, and 255lph Fuel pump installed. So I don't know if the engine has taken a dump, or I need to change some things to get the NA setup to function properly. So here goes:

Idle: ~1000rpms ~-18 VAC

If I tap on the accel, rpms will drop to 300-400. Then back up to 1k.

If I accel bringing the VAC between -5 to 0 (Full throttle), I have NO POWER.

I can get most power when the VAC is between -10 to -5.

While crusing, if I barely hold down the accel (giving it little gas) it will shake pretty hard.

She smokes a little bit, and there is a slight burning smell.

fixed-Oh yeah, and on the way back from the exhaust shop this morning (to get my new header to match up with my exhaust) I had about ~1/2 oz Oil in Catch Can after 10mi-fixed

So theres a list of things off the top of my head. The engine is still under warranty, so was planning to bring it in for a swap or fix...but wasn't sure if it might be something else.

This post has been edited by erics1one: Mar 10, 2005 - 11:23 AM


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post Mar 9, 2005 - 2:47 PM
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shid



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Wow.. wow..

Yes, a lot of overfueling. Why on earth did you unplug the air fuel ratio controller? It could care less if you're using a turbo or not, it just adds fuel based on how much air you're getting- or SUBTRACTS fuel when you're getting too much- the stock ECU doesn't count on your pump and FPR.
post Mar 9, 2005 - 2:51 PM
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erics1one



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QUOTE(shid @ Mar 9, 2005 - 12:47 PM)
Wow.. wow..

Yes, a lot of overfueling. Why on earth did you  unplug the air fuel ratio controller? It could care less if you're using a turbo or not, it just adds fuel based on how much air you're getting- or SUBTRACTS fuel when you're getting too much- the stock ECU doesn't count on your pump and FPR.
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Not really.

The HKS S-AFR can only be manually adjusted. It doesn't add or subtract fuel by itself, but you could program it to do so. Dyno tuning it would make it work best. Which is a $300+ job (according to the local performance shops).


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