I took my car for a quarter mile run but am dissapointed in my times.

The car has been dynoed on a dyno dynamics dyno at 213kw atw.
For comparision the car made 174kw atw with just the cat back exhaust and nothing else.

Evo IX
The mods are as follows:
HKS Hi-Power Silent cat back
High Flow metal cat with MAP sensor
HKS GT Pipe (Dump + Front)
Apexi Pod Filter
Weapon-R Intake Manifold
Motec M800 PnP ECU
Apexi Avcr set at 20psi
MR Bov.

Best time I run was a 13.06@104.3mph this was with a 1.78 60ft.
Surely I thought the car would be capable of mid to high 12's???
Any ideas? I was changing gears at the 7k red line.

One problem was that right at the end of the 400m i would be well into the red in 4th gear so i would leave it till it bounced of the rev limiter, becuase if i changed to 5th i would be over the line before it would engage. (IX has 6 speed)

Why are my times so slow or is this correct?

 

Getting a true 3" exhaust without a cat would be a step in the right direction...

 

Unfortunetly the car is driven as a daily driver and having no cat is highly illegal here, my previous car a wrx had no cat and it spat flames on hot days or when driven hard, other than better throttle response the power increase was nothing special.

 

Honestly I don't know why your car isn't running faster, there are no boost leaks right? Maybe the strips are slower there, you should be trapping higher and running quicker times. Something is not right.

 

I trapped 12.9 with 3" TBE. Thats about right. Get that thing flashed if you want a little more.

 

im not sure why your times are slow either...maybe it just the track. i know my times are slow because of the ****ty track we have next to us! LACR is kinda high in altitude!

 

She has a MOTEC PNP ECU - she doesn't need a flash.

Ami, there is obviously something wrong with the drag strip timers, because the only way you're hitting the rev limiter in 4th is if you're up around 111-112mph trap speeds. There's NO WAY to trap 104mph and be near the rev limiter unless you have a different 6spd than the rest of us. I know you're in Australia, but even the 6spd can trap 110+ in 4th. Back before I had my rev limiter raised, I ran a best of 12.01@111.67 bouncing off the rev limiter. I would think you'd be right in this same range with your IX on those mods and hitting the limiter.

Something is definitely awry unless you really weren't that high in 4th.

 

Rev limiter may be set lower.

 

I missed that.. Nice that the IX gets six speeds over there.
Could this be why it is bumping the limiter just over the line? 108.2mph max without rev increased in 4th from the 6sp from what I can find.

 

Yes that was my thoughts as well due to the ecu. However, who knows? First off I would have to say it is a horrible choice in mods IMHO. I know you want to be smog legal but in the game of racing that just doesnt work. Its either one or the other. Its a bridge you will have to cross. So if you want better times then get the 3in tbe with cat delete pipe. Take out the intake and put the stocker back on. Get rid of the ecu and just get a flash. Baicalyl go with the mods in my sig and you will for sure have better times.

I mean 1.78 60fts should definitely have you in the low low 12's.

 

Hmm, no, read what I already wrote. The 6spd can trap right around 111 bouncing off the rev limiter in 4th. 108 might be closer to redline (7000rpm), but it's not the rev limiter (7606rpm). In fact, we can go a good bit higher than 111 in 4th in terms of pure mph, but trap speeds are an average mph between two boxes at the end, so the traps you see are lower than the actual speed. I did probably 30-40 runs in the 12.0-12.3 range bouncing off my stock limiter in 4th with a trap never lower than 109.xx. It is possible her rev limiter has been lowered, but she did say that the tach was well into the red, which means well above 7000.

 

She cut a 1.7 60' and trapped 104 mph. She's making 285.63 whp. I'd say that's good for a high 12 second run. With some better shifting you should hit 12.8 or 12.9.

I see you've got some nice supporting mods for higher boost. I think your exhaust set up is fine. I would concentrate on your driving skills & more boost. If you have 93 octane or higher, try setting the AVC-R to 23-26 psi. You may have to tweak the Motec somewhat too to account for the higher boost. That whould raise your power output and definitely put you into the 12's.

Good luck! Let us know the results of anything new you try.

 

Just going by the book.. if thats what happens then thats what happens. So be it.

 

What book? I'd like to see what it is that says we hit 108.2 mph at 7600rpm in 4th on the 6spd or in any Evo.

 

The rev limiter is not set low at all, it cut off just under 8k. Maybe Im granny shifting??? but even then i dont see how that would shave off almost .5 of a second?
I use 98 octane petrol here which i think i equvalent to your 92-93 octane.

I also have on the AVCR a low and high boost, 20psi for high boost and 14psi for low, I use the low for everyday driving to save on fuel consumption, is this ok? or could this also be confusing the motec? The is however running very rich now and backfires all the time even when driven slowly around time, the tuner needs to hook up th oxygen sensor or something to sort this out.