yea but a SC with no tuning mixed with a freer flowing exhaust system by way of test pipe and upgraded exhaust mixed with colder air can put you over the edge.

You may not blow your motor in 2 days...or 2 months...but running THAT lean for that long is def. not a good idea. Esp if you are going to be pushing the car hard a lot.

Again not every car will be the same, but I've seen some AFRs for cars @ WOT in full boost being as lean as 14.5 That IMO is VEERRRYYYY lean for an FI setup, and def not something I would want to risk in cold weather...

 

Naveed,

If you have installed your EMS and FI setup with stock exhaust, you're gonna tell me the EMS won't compensate enough for a test pipe and exhaust? I guess I'm alone on this one...I'm the first guy to point you to a dyno...hell, do it just to be safe, but I'd bet money the AFR's are still safe after the installation of the exhaust (assuming a good initial tune upon installation of the FI setup).

 

It is well known that single 70mm exhausts make 12-15 rwhp naturally aspirated. Stop saying aftermarket exhausts don't make power on N/A applications. It's the HKS's and Comptechs and Fujitsubos that make people say these things because they don't make power.

 

Sorry, but you're wrong there. Captkirk is very much correct.

https://www.s2ki.com/forums/index.php?showt...l=blew+my+motor

A simple test pipe and exhaust managed to lean a system to the point that it blew the motor.

I'd rather not gamble other peoples motors. The ECU will not always be able to simply compensate with boltons that the CTSC was never designed to work with. 1 hours worth of tuning to have peace of mind and prevent your motor from popping, that's a pretty good deal if you ask me.

 

I *still* have my stock exhaust system, but before we put the SC on the car I had an AEM V1. Frankly, I still miss the sweet sound of the V1, but the extra power from the SC helped me get over it.

 

Aftermarket exhaust DON'T make power on N/A applications.

 

mmm...k...
*sigh* I know I'm gonna lose this so I'm just gonna say it:
Dude, get an EMS and get it tuned every time you add a bolt on to be on the safe side of things (better yet, add a wideband and you can see what you bolt ons do to your AFR's before).

 

Who said anything about EMS??? I was assuming a base SC kit when I made my statement. If you take a base SC kit, then throw in the variables I mentioned I still think that the car will run much leaner than before those variables are added to the scenario.

With that said, I still wouldn't trust an AEM EMS to auto-compensate for any upgraded header, exhaust, test pipe, or anything else unless I had a wideband O2 with a gauge for me to look at. I like to be very careful....

 

just do all the stuff before you get it tuned, then there is no way of miscalculation on A/F ratios

 

That would be best case scenario, but come on, you know we all want to get things in steps so that we can have little upgrades along the way, rather than waiting longer and getting everything all at once

If you can wait and get everything all at once then yes definitely get it tuned after getting everything on, but if you plan on getting SC first and then the other stuff, then you'll have to get it tuned after getting everything installed to make sure that everything is in good running order