Jump to content
Do Not Sell My Personal Information


Resetting Ecu?


MattMR2Turbo
 Share

Recommended Posts

I've just read in a few posts about resetting the ECU?

Just wondered what the reason for this is? :blink:

I've changed my leads and plugs etc and I read somewhere that I should reset the ECU as well?

Can someone tell me the benefits of this and list scenarios when the ECU would need resetting please. I'm a rev3 turbo by the way.

Cheers

Link to comment
Share on other sites


If your old leads were knackered .. the ECU should adjust .. so when I change any leccy parts, I re-set the ECU ..

Saves the car runnning rough for a few weeks until it "learns" about the new leads ..

Link to comment
Share on other sites

yeah .. a reset will make the ECU learn from scratch (well from the default, boost friendly, smooth running options).

I don't think boost hike really matters (as all the FCD's ect are fooling the ECU into not knowing about the hike). But it doesn't do any harm !!

and after a boost hike - you'll also find out where any weaknesses are in the lecky system, the problem is magnified.

Link to comment
Share on other sites

Hmm....

Mine is due for a service which I will do shortly when I get paid BUT....

I've altered the bleed valve so it boosts fully on the standard dash boost gauge (take it it should be about 13psi at max on that gauge?), and it gets to full boost just after 3k but I get a big surge of power at 5k for some reason, and you can hear the difference in the engine too.

I've got new magnecor leads but I'm getting new plugs and dizzy when I service it.

Do you think it's something electrical that makes this surge at 5k?

Link to comment
Share on other sites


Its the same with me m8. The rev3+ 3rd gen 3SGTE hits max torque at 5000-5500rpm. Its normal. My RR readout indicates the turbo hittin 15psi at 5000-5500rpm and then levels off to 13psi to 7000rpm. (my car is runnin stock 13psi). I assume it must be for drivability as its handy when ovetaking etc. Just be very careful cos its a danger spot in the wet. When the roads damp I always grit my teeth as the needle approaches that 5k...wheelspin central. But if youve turned up the boost this peak torque moment will obviously be even stronger. For example, instead of hitting 15psi at 5-5.5k rpm (like me) youll probably be hitting 17psi at 5-5.5k pm and levelling off at 15psi till 7000rpm :ph34r:

But I dont see how adjusting the bleed valve would then make your vac gauge hit the roof. It should do that regardless if its 10,13 or even 18psi. It just measures pressure. You really should have a proper boost measurment gauge like the Ormori thingy if your adjustin boost with that valve. Actually you should get a G-Valve too the bleeders are cack.

Link to comment
Share on other sites

VSV?? :unsure:

VSV stands for vacuum switching valve, its just a switch basically.

I found this site a while back when i was finding out how stuff works on the mr2. If you're unsure on how the turbocharger works or any other technical gadgets then have a look at this,some very useful info. It also details the fault codes for the ECU.

http://member.newsguy.com/~gtfour/technicl.htm

P.S. the site is actually about the Celica GT-4 ST185 so i dunno if the ecu codes are correct for a mr2 ecu. Everything else is the same though.

Link to comment
Share on other sites


Hes running a stock ecu like me. Yours will be different cos of your chip. 15psi flat on the ct26? Damn must be cookin back there. Roguesystems are working on twin fans on the engine lid tha shift ho0j amounts of hot air. £250odd quid i think . Itll be better than 850+ for a new intercooler. Worth askin about jimlad.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

×
×
  • Create New...




Forums


News


Membership