2012 tsx SC hard start issues

FlashPro questions & answers specific to the 2007-2008 US TSX
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iselfdevi
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Joined: Sun Apr 26, 2015 6:49 pm

2012 tsx SC hard start issues

Post by iselfdevi »

Ok so I supercharged my 12 tsx a few months ago and ever since then Ive had hard starts. Both cold starts and warm starts, it cranks for 3-4 seconds everytime. I have tried adjusting cranking fuel though the IAT/coolant cranking fuel settings and the overall cranking fuel table. In my adjustments, it would either stumble due to very little fuel or crank for 7 seconds because of to much fuel. I just couldnt find a perfect spot.
No matter what, it will crank for 3-4 seconds. The only time it will start normal is right after shutting off my motor. So, it starts fine with back to back starts but if its cold or if it sits for more then 5 min after shutting off the motor, it will crank for 3-4 seconds. Other than that, the car drives great. It was tuned by a well known tuner and he has been trying to help me resolve this issue with no success. Not sure what else to do.

The car only has 9500 miles
550cc DW injectors
CT-E supercharger
CT-E intake
2012 Acura TSX 4cyl 6MT - flashpro - ct-e supercharger - ct-e icebox intake - deatschwerks 550cc injectors - RV6 downpipe/pcd - Vit tuned

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Spunkster
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Re: 2012 tsx SC hard start issues

Post by Spunkster »

You have not posted the calibration or datalogs showing the issue.

iselfdevi
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Joined: Sun Apr 26, 2015 6:49 pm

Re: 2012 tsx SC hard start issues

Post by iselfdevi »

Sorry for the delay. Files are now uploaded. This cold start isnt as bad as the other cold starts i have been having. I reset all cranking fuel options to stock.
Attachments
datalog0000 Cold start.fpdl
(65.91 KiB) Downloaded 90 times
Ricardo.AFMAP.TSX.CTe.Rev04.2.fpcal
(17.84 KiB) Downloaded 89 times
2012 Acura TSX 4cyl 6MT - flashpro - ct-e supercharger - ct-e icebox intake - deatschwerks 550cc injectors - RV6 downpipe/pcd - Vit tuned

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Hondata
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Re: 2012 tsx SC hard start issues

Post by Hondata »

Injector duration looks high at start for the injector size. The dead times are too low too - for a 550cc injector @ 3.5 bar and 14V I'd expect just over 1ms. I think the 'water temperature fuel compensation cranking' table values are too steep, and would copy the numbers from a Civic Si over, and then decrease the overall cranking fuel until you get a good hot start.
Hondata

iselfdevi
Posts: 45
Joined: Sun Apr 26, 2015 6:49 pm

Re: 2012 tsx SC hard start issues

Post by iselfdevi »

Ok. I will relay this info over to my tuner. Thank you. Just FYI, I had a successful cold start today with those same settings in the cal above. The only thing that was different was the outside temp. 58 degrees this morning.
2012 Acura TSX 4cyl 6MT - flashpro - ct-e supercharger - ct-e icebox intake - deatschwerks 550cc injectors - RV6 downpipe/pcd - Vit tuned

iselfdevi
Posts: 45
Joined: Sun Apr 26, 2015 6:49 pm

Re: 2012 tsx SC hard start issues

Post by iselfdevi »

My tuner insists that he used the right latencies for the injectors. What setting would you suggest? Especially for the 10-11 volt range during cranking.
2012 Acura TSX 4cyl 6MT - flashpro - ct-e supercharger - ct-e icebox intake - deatschwerks 550cc injectors - RV6 downpipe/pcd - Vit tuned

iselfdevi
Posts: 45
Joined: Sun Apr 26, 2015 6:49 pm

Re: 2012 tsx SC hard start issues

Post by iselfdevi »

Anyone?? I can't find any k24 550cc Cals in the Hondata vault for comparison. This is really starting drag me down.
2012 Acura TSX 4cyl 6MT - flashpro - ct-e supercharger - ct-e icebox intake - deatschwerks 550cc injectors - RV6 downpipe/pcd - Vit tuned

iselfdevi
Posts: 45
Joined: Sun Apr 26, 2015 6:49 pm

Re: 2012 tsx SC hard start issues

Post by iselfdevi »

I fixed the hard start issue. It was two leaky injectors.
2012 Acura TSX 4cyl 6MT - flashpro - ct-e supercharger - ct-e icebox intake - deatschwerks 550cc injectors - RV6 downpipe/pcd - Vit tuned

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