2007 Infiniti G35 HR Sport 6mt

Performance Modifications:
- GTM RTPs
- Stillen CBE
- Stillen V3 CAI (Pending Install)

I’ve researched the forums and noticed that a lot of members are running Pulley’s. That may be something I’d be interested in the future.

My question is basically do I NEED a tune? I’m currently running Stillen CBE with GTM RTPs. I haven’t installed my Stillen V3 intakes because I don’t want to run too rich or too lean.

Based on your experiences what do you guys suggest?

1. What kind of AFR do you think I’m running now with CBE and RTPs?
2. What if I install my Stillen V3 CAI intakes? (CBE + RTP + CAI)

At the moment, I’m more concerned about my AFR than gaining 10-15 whp from the tune. I do plan on tuning in the future (maybe next year) but I want to make sure my car is running right with the modifications. (Hence the reason why I’m waiting to install the Stillen V3 CAI.)

How can I measure my AFRs? Any cost efficient ways besides Dyno and AFR gauge?

Thanks!

 

you'll be perfectly fine with those mods and does not require a tune however you should reset your ecu for fuel relearn. i would not worry about it!

 

you dont need any gauges. you data log with cipher. you can either buy it or ask a friend who has one to log your car. It will be running safe and very rich stock. stock targets are retarded rich at like 11.x under WOT. mine were around 12.6 at wot and I have a similar car as you

 

Here are my AFR datalogs with CBE, TP's and Stillen GEN3 intakes before getting a tune

RPM AFR
3378 13.8
3528 14
3678 14
3828 14
3978 14
4128 14
4278 14
4428 14
4578 14.1
4728 14
4878 14.1
5028 14.2
5178 14.3
5328 14.3
5478 14.2
5628 14.2
5778 14.2
5928 14.2
6078 14.3
6228 14.3
6378 14.2
6528 13.9
6678 13.9
6828 13.9
6978 13.8
7128 13.7

 

Looks a little lean to me, did you ever get any evidence of detonation? What were your A/Fs after you tuned, low 13s - high 12s?