Running a new engine on a stock ECU


J

joe

200WHP
Joined
Aug 8, 2010
Messages
1,284
Hi all,

Putting a new engine in my car within the next few days, my question is..

Can I run the car with a stock EK4 ecu to the tuner? Or how about a P28 with a basemap?

Thanks in advance.

Joe
 
That will be fine as long as you don't drive it hard. They are both 1.6 at the end of the day.
Dunx
 
Depends on the engine spec? I wouldn't like to start a new build up on stock ecu if larger injectors were added so give us some more info on your engine build
 
Apologies, I was a little vague lol,

New engine spec includes:

High compression 12;0;1 - 13;0;1 sleeved 85mm B18
330cc (or the likes) prelude injectors
 
That will be ok as if anything it will over fuel it. As long as it doesn't "pink" I would just drive it.
Dunx
 
dunc i think you mean "ping"? Anywho, i would not drive it, thats rather high compression to be running on a stock ecu. Over fueling on a new engine can wash the cylinder walls of their precious vital oil that the piston rings need to break in. If you over fuel on the way to the dyno your pistons can overheat, expand, and grind up against the cylinder wall and cause A LOT of damage, i have seen this happen countless times. Just tow it, be safe, if you drive it, it's a massive gamble!!
 
The more I think about it the more I should just tow it, as you say, I could blow the motor up before I even get to the tuner!

Thanks all.
 
Agree with Blinx, dont fire it up on stock ecu, bore wash is last thing you want on initial start.
 
Call me stupid but.
What will the tuner do when you get there?
Lean out the map to prevent bore wash Initially then re adjust to optimum?
 
Jake123 said:
Call me stupid but.
What will the tuner do when you get there?
Lean out the map to prevent bore wash Initially then re adjust to optimum?
Click to expand...

The tuner will have the ability to scale the map for larger injectors so it starts up with close to ideal fuelling, they may even have a similar map from another car to load on to ecu for start up, either way it wouldn't take any longer than half a minute to adjust fuel at idle to correct a lean or rich condition upon start up.
 
I dont ever understand why you would ever want to fire a new build up on the stock map.
 
Vtec6000 said:
The tuner will have the ability to scale the map for larger injectors so it starts up with close to ideal fuelling, they may even have a similar map from another car to load on to ecu for start up, either way it wouldn't take any longer than half a minute to adjust fuel at idle to correct a lean or rich condition upon start up.
Click to expand...

I see :)

Thanks for explaining it to me!
 
Agreed, stupid idea!

However,

Would it be possible to get a basemap chipped P28 ECU from scott at H tune for example which would make my car driveable? My dilemma is that I want to get my 3inch custom exhaust system fabricated and fitted before I tune the motor, and I don't fancy trailering the car everywhere.

The motor has around 2k miles on it

Joe
 
blinx9900 said:
dunc i think you mean "ping"? Anywho, i would not drive it, thats rather high compression to be running on a stock ecu. Over fueling on a new engine can wash the cylinder walls of their precious vital oil that the piston rings need to break in. If you over fuel on the way to the dyno your pistons can overheat, expand, and grind up against the cylinder wall and cause A LOT of damage, i have seen this happen countless times. Just tow it, be safe, if you drive it, it's a massive gamble!!
Click to expand...

I agree with this statement 101%
Do not drive the car w/ stock ecu
You're going to ruin it
 
joe said:
Agreed, stupid idea!

However,

Would it be possible to get a basemap chipped P28 ECU from scott at H tune for example which would make my car driveable? My dilemma is that I want to get my 3inch custom exhaust system fabricated and fitted before I tune the motor, and I don't fancy trailering the car everywhere.

The motor has around 2k miles on it

Joe
Click to expand...

If he has mapped a car with pretty much identical setup then perhaps you could get a chip with safe map off him but personally i'd prefer it to be mapped from the word go.
 
I know this is going to FREAK some people out but I've driven a high comp setup over 50 miles before with a stock ecu and injectors. I just retarded the base ignition timing and drove it VERY carefully... then again though, I know what I'm looking out for.
 
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