Tune Question

[Missileman]

As the weather is warming up I've noticed that my 32gtst is not starting from cold as easily as it does or should compared to winter time, we just had a really cool morning and the car started first crank, when the engine is at operating temp restarting is fine, always first crank, it just has an issues starting first start of the day when ambient temps are over 25c

Any suggestions before I start playing around in nistune?

[burn4005]

Probably need more crank prime at warmer areas

[GTSBoy]

It's actually probably the change in fuel from winter blend to summer blend.  Tuning it out will possibly require reverting back in 6 months.  Try it and find out.

[Missileman]

Fresh tank of fuel from a very new seven-11 noticed the same ting last summer, issue disappears in winter. I think it's running a little rich in the cold crank table, will have a play when it stops raining...

[89CAL]

Was it tuned in winter by chance?

[Robocop2310]

I don’t think it’s the petrol that’s the problem.

Suggest you check/clean coil packs and inspect spark plugs might need to replacing.

 

[Old Booster]

Take back to the tuner and get a touch up.

Edited October 13, 2018 by Old Booster

[Dose Pipe Sutututu]

Your crank fueling vs temperature is out. Bring it back to your tuner or if you have Nistune fix it yourself or download it and send it to me and I'll fix it for you.

[Missileman]

Tune was by me a couple of summers ago, thanks Johnny I'll open it it up and have a look, If I have problems I'll send you the file to have a look at.

[Missileman]

On 10/12/2018 at 9:21 PM, burn4005 said:

Probably need more crank prime at warmer areas

After looking at the tables I think you are correct, I've added a couple of percentage in the 20c and 30c blocks of the cold crank enrichment table., have to wait until the ambient tenps warm up to see if it made any difference.

[Dose Pipe Sutututu]

the graph plot should be some what an exponential decay

[Missileman]

On 10/15/2018 at 10:45 AM, Missileman said:

After looking at the tables I think you are correct, I've added a couple of percentage in the 20c and 30c blocks of the cold crank enrichment table., have to wait until the ambient tenps warm up to see if it made any difference.

Update: my correction to cold crank enrichment has worked... starts like and idles like a champ once again.

So now I suppose I should start looking for any air leaks, but only when all the rubber is cold.

[Dose Pipe Sutututu]

Yay! 

Now do a burnout or buy my turbo setup ?

[Missileman]

17 minutes ago, Dose Pipe Sutututu said:

Yay! 

Now do a burnout or buy my turbo setup ?

funny guy, I own a 32 not a 33. besides, I have not updated my dif yet.

[Dose Pipe Sutututu]

3 hours ago, Missileman said:

funny guy, I own a 32 not a 33. besides, I have not updated my dif yet.

Everything will fit minus the cat back, just need to mod the hangers and shorten it