07 Civic Si help

[Lifeisgainz]

Just purchased a new to me 07 si. Car currently has a Sri/unknown race header/rev 9 exhaust. I’m new to tuning/maps so any info would be greatly appreciated. I have a hybrid cai and full race exhaust on the way. Once they are installed it will be going to get tuned on a dyno. Until then, I want to make sure the car is running safely. Which base map would be best to start with for these mods?

[CalibratEd]

Just purchased a new to me 07 si. Car currently has a Sri/unknown race header/rev 9 exhaust. I’m new to tuning/maps so any info would be greatly appreciated. I have a hybrid cai and full race exhaust on the way. Once they are installed it will be going to get tuned on a dyno. Until then, I want to make sure the car is running safely. Which base map would be best to start with for these mods?

Welcome to the forum,

I would go with a base calibration and adjust the fuel and timing as needed to make sure its running safe. Depending on how long from now your tune is scheduled, the tuner might be able to offer a safe base map.

-Ed

[Lifeisgainz]

Hey Ed,
I know it’s been a while but man I’m in a frustrating place now. I had a valve lash adjustment done as well as a s2 header, HR CAI and a j35 throttle body installed. The same shop then tuned the car and suggested adding a wideband sensor so I now have that. It made 213 whp/145 wtq on a Mainline dyno (seem to read lower). I was super happy with the car but it had some little hiccups in the tune where it would break up while cruising in between 2-3k rpm. One day it started to run extremely rich. It’s been back to the shop, all grounds checked and tuned again and after about 30-60 min it does the same thing again. Pig rich like down into the 9:1s to the point that it bogs and breaks up terribly. I’ve had to limp it home every time this happens. I’ve recently changed the MAP sensor and returned the Tb back to stock and it seemed good again than it randomly goes rich but now it will return to 14.7 or so around idle( which it wouldn’t do before). It’s really strange it’ll run great for about an hour if I disconnect and reconnect battery then acts up again. Throws no codes. I’m starting to lean towards a possibly bad ecu but would love if someone could put an eye on my tune and see if it’s anything obvious before I purchase a new ecu.

[Lifeisgainz]

This is the final tune

[CalibratEd]

I’ll take a look at it when I get a chance.

-Ed

[Lifeisgainz]

I’m leaning towards a grounding issue with AEM X series wideband. It definitely isn’t grounded to the right location. They grounded the black ground wire to the chassis by the fuses under the dash. There’s also a brown wire which is analog ground that they seemed to have spliced to what may be a ground on the actual plug going into location C on ecu. From what I’m reading they should both be grounded to same point as ecu on the intake manifold…? I think this may have caused issues which they tried to compensate for with the tune because it’s wonky as hell after going thru it with someone else.

[CalibratEd]

I’m leaning towards a grounding issue with AEM X series wideband. It definitely isn’t grounded to the right location. They grounded the black ground wire to the chassis by the fuses under the dash. There’s also a brown wire which is analog ground that they seemed to have spliced to what may be a ground on the actual plug going into location C on ecu. From what I’m reading they should both be grounded to same point as ecu on the intake manifold…? I think this may have caused issues which they tried to compensate for with the tune because it’s wonky as hell after going thru it with someone else.

Sounds good. I'm glad you figured it out.

-Ed