91 octane? Didn't he tune for 93?

 

Us lucky CA residence only get 91, reason why tuners recommend E85 more for us.

 

Yeah unfortunately I can only do 91. If there was a smog legal tune that would let me get tested on E85 flex fuel parts without throwing codes, then I would have done this. I heard that there isn't much of a difference between 91 and 93 though. Maybe a few hp.

 

I'm curious now to see which graphs your looking at making 320 wheel with hfc,catback and intakes alone.

 

315whp on 91, stock header with HFC downpipe is to be expected. You’d probably pickup 8-10whp from 93, another 5whp from test pipe, and another 5whp from header, or another 13-15whp from longtube header. That’s potentially 25whp on the table for a solid 340whp. Plenty of 91/hfc dynos are sub 320whp, don’t compare your dyno to another random hero run dyno. You should really only ever compare your dyno to another one of your dyno’s assuming its the same dyno.

the reason for trap, 1/4m et, 0-60, 60-130 times being a better indicator of power is because power on a dyno is a random arbitrary number that means nothing at the end of the day. Would you rather make 350whp and run a 13.5 or make 320whp and run a 13.0? which one do you think is actually making more power?

Dynos have a million and one variables that will output all kinds of varied numbers. Need to compare yourself to yourself, or at least line up on the street/strip with an identical setup and see what happens, or use a dragy to measure your before and after times to see if you picked up what was expected.

 

Oh Really? You're saying 93 vs 91 could be a difference of 8-10 WHP? If that's the case then everything makes sense. Yeah the 5whp from test pipes vs HFC is kind of what I expected. Would rather save my passengers the smell and drone for that amount. Also like I said, I don't have any other dynos of my car.

 

Potentially yes, picking up 1-1.5% more whp per point of octane when tuned for said octane isn’t uncommon at all on NA, FI potential even more.

To know for certain you’d need to know if your timing is already at MBT or not, chances are on 91 it isn’t.

I know, the main point of my post is you are probably chasing or worried about an issue that doesn’t exist, and you have no way of knowing based on your dyno as it’s within the realm of reasonable.

You can however go get a dragy or go to a strip and get some further data to indicate how your setup stacks up.

 

Ok I didn't know this. I feel at ease for now, thanks dude.

 

These cars have been proven to make it's best power on the highest of octane possible. Back in my Honda days I did an old "G22" very similar to the VQ37HR hybrid where you keep swap higher flowing heads on a bigger stroke block.
I chose a slightly bit lower compression to run 87 oct with the intent of maxing it out. Most Honda H22s 2.2 vtec can average between 180-200whp depending on the tuning. This is on a 10.6 comp on 93, I was running 9.5 on 87 and managed at 178whp all on 87 and bolt ons. I would have been able to get a bit closer to 195 if he would have been able to add more timing which he couldn't on 87 oct.

Though you have seen folks with cats yield higher, the one thing you'll never be able to check is flow conditions of your cats at WOT and see if the higher yielding cars flow better.
You should look out for HFCs and put them on after smog to see if this is your actual issue then figure what you can do for smog.

Another idea is to buy a set of cheap test pipes and install some decent universal cat that's bigger in size so you dont drop so low on cell count.

 

​​​​​​​98k ​​​​​​​ ​​​​​​​91/Admin 3inch/crappy ported upper attempted by me/FI rhfc/Ark grip exhaust also recommended by admin. Same dyno, similar mods as you I believe. I went in thinking I would easily hit 320 that day based on other people doing it on social media with the same or lesser mods. Surprised by my results, I asked him what he thought about it. He said my engine is running strong, and test pipes would only add 10 or 12 more horsepower. I guess it's a good example on how not to get caught up with numbers. Every Dyno reads different everywhere.​​​​​​​​​​​​​​

 

How long ago did you have your car tuned?

 

5 months ago.

 

Good ol' CA and CO where I am... we don't get 93 oct.

Lots of high horsepower dudes in CO run E85 anyway.

 

Cell count?

 

The only reason I ask is because I got my car tuned a year ago (Different location). I recently went back not to long ago and the tuner was impressed by the numbers being put down.He was mentioning a newer program update for his computer,which I kept thinking it was for ECUTEK.Turns out it was the way the numbers read on the dynojet and told me how stingy it became with its numbers.A client that he sees often actually lost 35 to 40 whp when his numbers have always been consistent.He told me the drop has been straight across the board with the mods he has since in cars and expectations. I wonder if all the Dynojets are running on this new software are we are going to begin to see lower numbers at the wheels from modifications?