Unitronic tune

[Queiffen]

So I got the uni stage 1 tune and wanted to upgrade to the stage 1+ but it says it needs 93 octane but the highest octane level around where I live is 91, would having 91 instead of 93 really be that big of a deal?

 

[jay745]

Yeah you need 93. Can always hook up a water meth system to increase the octane

 

[JC_451]

Definitely not a good idea.

You can't hit the benchmarks required for 1+ with 91 octane. It'll run poor and you're begging to have something really bad happen.

 

[8055WAGEN]

Send them an email / call and ask. My Uni IS20 says 93 on their website, but it also supports an ethanol blend.

 

[tigeo]

The Stage 1+ is a "+" b/c you get some extra power (timing) from using 93. If you have 91, the regular Stage 1 is for you. To be honest though, it's not like if you run 91 in a 93 tune you will blow up your car...just don't get full advantage of the extra timing advance available. Something I found on the subject when I was deep into this decision over a year ago.

 

[jimlloyd40]

Use Torco octane booster. I've been using it for over 20K miles with no problems.

 

[tigeo]

You can also buy the Stage 1+ which gives you both the regular (91) Stage 1 file AND the 93 file. You can flash back and forth depending on your fuel situation.

 

[Ironshade]

Lol its fine. 93file on 91 will cause zero issues.

ive ran 87 oct on 93oct file for maybe 30k miles when i was going to school. Is38 car. Btw

 

[tigeo]

Lol its fine. 93file on 91 will cause zero issues.

ive ran 87 oct on 93oct file for maybe 30k miles when i was going to school. Is38 car. Btw

Exactly.

 

[victorchen008]

The whole point of the stage 1+ file is advance some timing for the 91. If you can only find 91 it does not do anything for you.

 

[odessa.filez]

related to this, does running 93 on the 91 file have an advantage to running 91 on a 91 file?

same for apr?

 

[tigeo]

related to this, does running 93 on the 91 file have an advantage to running 91 on a 91 file?

same for apr?

The software will only allow so much timing advance and running 93 in a 91 tune, while certainly ok to do, shouldn't give you the same timing advance and power you can get out of a 93 tune running 93.

 

[OBP]

93 will only have an advantage if there is timing pull using 91oct fuel.

 

[tigeo]

93 will only have an advantage if there is timing pull using 91oct fuel.

correct