Hello Everyone! I've got a 2004 G35 VQ35DE Coupe running at 165k miles and I wanted your opinions on if I should go FBO tune or not (exhaust, test pipes, cold air intake, plenum spacer, throttle body, E85 conversion kit). After doing a lot of maintenance and repair work on the engine, I've been feeling like the g is barely pushing 210-220whp. Since the engines already running at high miles I would keep it as an NA build because Id still want to use it as my daily and I'm not expecting a lot out of it so boosting is out of the picture regardless because I cant afford to build the block or get an engine swap. I'm worried on how reliable the car would be after going FBO Tune as a daily? Would the tune affect how long the engine lasts?

Here's an insight on the repair work I got done. Swapped out both knock sensors. Installed new MAF sensor. Repaired and changed rear main seal to fix oil leak. Changed Valve gaskets to repair oil leak. New radiator with radiator fans (OEM). Changed belts last year. Replaced Oil pan. Check engine is on for an O2 sensor but I should have one of my sensors swapped out sometime this coming week to clear check engine code. I bought this car with these issues and as you can tell a lot of oil issues were going on haha, but I've fixed almost all of them and the car feels way better but its performance is something Id want to improve. The g only has the plenum spacer and intake atm. (it is straight piped, lol i know not for long though!) So what are ya'll thinking? The only thing holding me back is the mileage. If i go FBO Tune I wanna make sure damn well this car lasts another 2 years because I've put a lot of work into it and I enjoy it as a daily. Any advice? Tips? Recommendations?

 

Just get an Uprev eTune from @seymore4 . Tried and true, proven results. Perfect for a NA engine with the bolt-ons you have. Highly recommended. All you need is a Windows laptop and $$ for the Uprev cable, license, and seymore4's service. You won't be sorry.

 

Got it, how can I contact him? On here or socials/email?

 

I think you emailed me already but if not my direct email is my forum username, @gmail.com

 

Also as long as the engine is healthy I would have no concerns tuning at that mileage.

 

Thank you so much for the information.


 

I tuned a Titan with close to 400K miles a while back... turned out great and the guy's only regret was he didn't do it sooner

 

Do they have a tune for 03 coupe??

 

yes we can tune all 2003 coupes. Email me. Seymore4 at gmail