unispeed

Whipple Charged,
Got a couple 1075 sci's 2008 vintage
currently one has a boost valve fail (gonna verify)

question..
What I would like to do is turn the 1075's down to 850
hoping they would top out slower, with less boost, and last a little longer
and burn 89 between 93 fillups..?

think that is doable?

can they be reprogrammed for that or better to buy new gen?
engines need modified much?

thanks
Mark

Ace snake

Is there a Code for IAC pcm failure ? who do i know for sure ? motor is a 700sci .tks

Got Freedom?

If you have SmartCraft you can find the codes under Engine Data.

Sydwayz

iTrader: (1)

An IAC failure will throw a code, but it's only one code. It does not diagnose.

There are only three things that cause an IAC failure code:
IAC itself.
Wiring harness.
PCM.

If you have replaced the IAC, but still have a code after clearing; inspect the wiring harness and connectors as they can melt.
If you have more than one engine, swap the questionable ECU over to the other engine, as this will either tell you have a PCM issue, or an overall engine wiring harness issue.

sutphen 30

then you'll kill the second ecu.
if the idle is not being controlled and you changed the iac's,then something in the ecu failed.either a land failed or in our case a driver transistor.

sutphen 30

iac output failure,I believe is what it said.its been about month since the fix.

Sydwayz

iTrader: (1)

I should have clarified...
...swap the questionable ECU over to other engine; not vice-versa. I will go back and edit my post.
Thank you.

BattleCry

Whipple,

I hear you are able to do ecu upgrades on the Verado series outboards. Is this true?