Search found 17 matches

by schaffertnathan
Sun Oct 20, 2019 2:46 pm
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Question about MAP pressure
Replies: 1
Views: 10

Re: Question about MAP pressure

I mean 2.75in catless exhaust.
by schaffertnathan
Sun Oct 20, 2019 11:40 am
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Question about MAP pressure
Replies: 1
Views: 10

Question about MAP pressure

At wide open throttle, under 6500 rpm the MAP pressure seems good at around -0.4 to -0.9, but every time as soon as it reaches 6500 rpm the pressure decreases to about -1.5 to -2. Does this mean anything, in terms of efficiency, or maybe the tune isn't as good as it can be? I have a 3.75in CAI, stoc...
by schaffertnathan
Mon Oct 07, 2019 10:16 pm
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Running lean on hot startup
Replies: 5
Views: 87

Re: Running lean on hot startup

I will datalog a cold start and a hot start tomorrow and upload the files.

I'm on E85, so at first I thought that I couldn't use the factory O2 sensors with E85, but now I've just been too lazy to put them back since I have the wideband. I also have the Skunk2 catless downpipe
by schaffertnathan
Mon Oct 07, 2019 9:06 pm
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Running lean on hot startup
Replies: 5
Views: 87

Re: Running lean on hot startup

I don't have O2 sensors, just a wideband gauge. So it doesn't show AFR in the datalogs, but I'm running 14.7 during normal idle. It's only the first minute or so after hot start that it runs lean
by schaffertnathan
Mon Oct 07, 2019 7:52 pm
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Running lean on hot startup
Replies: 5
Views: 87

Running lean on hot startup

Cranking AFR while hot is good, but then after a few seconds the idle leans out quite a bit.. To around 17-18. It does Not do this during cold start after car has been sitting for few hours..only does it when the engine is still warmed up. I tried adjusting Cranking Fuel Trim on calibration tab and ...
by schaffertnathan
Tue Feb 19, 2019 9:06 am
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Running rich when battery voltage low
Replies: 1
Views: 902

Running rich when battery voltage low

I already know that I need a new alternator since the battery doesn't always charge properly. But is it normal to run rich when the voltage is low? I'm on E85, so normal AFR when idling at 14.5V is 9.7-10. However, when the battery is not charging at idle, and the voltage is around 12.2V, the AFR ri...
by schaffertnathan
Thu Feb 14, 2019 3:43 pm
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: VTC tuning without a dyno
Replies: 1
Views: 957

VTC tuning without a dyno

I have fuel and ignition tuned for each cam angle, but what would be the best way to tune the VTC angle maps without a dyno? And also, if cam angles aren't optimized, would that cause MAP pressure to decrease and not be near 0. Manifold pressure at full throttle usually shows between -0.7 and -1.4 I...
by schaffertnathan
Tue Feb 05, 2019 12:41 pm
Forum: FlashPro Manager
Topic: MAP pressure seems incorrect at WOT
Replies: 3
Views: 490

Re: MAP pressure seems incorrect at WOT

Spunkster wrote:
Tue Feb 05, 2019 12:17 pm
IT can be cased by restrictions and also by higher altitude.
by schaffertnathan
Tue Feb 05, 2019 12:40 pm
Forum: FlashPro Manager
Topic: MAP pressure seems incorrect at WOT
Replies: 3
Views: 490

Re: MAP pressure seems incorrect at WOT

My buddy has a 2015 civic si, and his MAP pressure reaches around -0.3 at high rpm wot. Could the silencer on my car be affecting the pressure that much? Or I was also thinking maybe the cam angle is not optimum? Can anyone tell if my cam angles look good just by reading the datalog?
by schaffertnathan
Tue Feb 05, 2019 11:58 am
Forum: FlashPro Manager
Topic: MAP pressure seems incorrect at WOT
Replies: 3
Views: 490

MAP pressure seems incorrect at WOT

What factors affect MAP pressure at wide open throttle? Looking at my datalog, my MAP reading hangs around -1.1 at high rpm, shouldn't it be closer to 0? Am I losing power since it's not as close to 0? If someone could give me all the factors that affect MAP pressure, I would greatly appreciate it! ...
by schaffertnathan
Sat Nov 10, 2018 7:27 pm
Forum: Civic Si 2012-2015 US/Canadian / 2013+ ILX
Topic: Quick question about cranking fuel
Replies: 1
Views: 1022

Quick question about cranking fuel

Can please explain how the ECU uses each of these tables: Cranking Fuel Cranking Fuel Trim Air Temperature Fuel Compensation Cranking Coolant Temperature Compensation How long after cranking does the ECU begin using the main fuel tables. And do the compensations add up? Like if the Air temp and Cool...
by schaffertnathan
Sun Aug 19, 2018 8:28 am
Forum: FlashPro Manager
Topic: ECU stuck in reflash mode, won't start
Replies: 7
Views: 525

Re: ECU stuck in reflash mode, won't start

Also, my scan tool gets power from the ECU, but it can't connect or retrieve any information
by schaffertnathan
Sun Aug 19, 2018 8:25 am
Forum: FlashPro Manager
Topic: ECU stuck in reflash mode, won't start
Replies: 7
Views: 525

Re: ECU stuck in reflash mode, won't start

When I plug the flashpro into the OBD port, the green light goes on for 5 seconds, then turns off and then every 5 seconds it gives 2 quick flashes followed by one orange flash of the datalog light
by schaffertnathan
Sun Aug 19, 2018 8:20 am
Forum: FlashPro Manager
Topic: ECU stuck in reflash mode, won't start
Replies: 7
Views: 525

Re: ECU stuck in reflash mode, won't start

I can't even connect the flashpro to the ECU. The OBD port is not responding or connecting
by schaffertnathan
Sun Aug 19, 2018 7:22 am
Forum: FlashPro Manager
Topic: ECU stuck in reflash mode, won't start
Replies: 7
Views: 525

Re: ECU stuck in reflash mode, won't start

I was thinking that. But it's reading 12.4V