While down at the shop that tuned my STi today dropping off a friends car i decided to dyno my evo to see where she is with the mods i put on.

I did not dyno my car when it was stock but for reference stock wrx's put down 160-170 Whp, and Stock STi's put down 235-240Whp. it is a mustang dyno but reads a little higher than other Mustangs i have seen. My mods are works turboback with test pipe, P2 re-flash, and works drop in filter. i dynoed 289 WHP @ 6700 Rpm's and 282 Wtq @ 3600 Rpm's.

Overall i was happy with the results

 

nice numbers...

 

Not bad at all, especially for pretty much three modifications. Stock EVOs would probably put down 230-235 on that dyno (maybe a little lower, not sure) so basically you picked up 60WHP (or more). Man at this pace you'll be pretty close to the numbers you made on your STi and you can do it on the stock turbo. Was this pump gas?

 

We have had basically the same cars. My STi made just over 350whp on pumpgas and my evo put down 275/290 before I put my downpipe on.

You have good taste.

 

nice #'s.. which turbo back are you running?

 

Thaks guys! this was done on 91 oct **** gas. and stew i have the Works tuning turboback, here is their site www.worksevo.com.

 

what did you have done to your STi?

 

Nice

 

Considering your 1/4-mile mph with race gas (104) and the fact that this dyno was only on 91oct, I would be inclined to think the numbers are a bit inflated. You dyno'd 5 less whp and 13more wtq than I did with catless TBE/MBC/S-AFC/K&N/MR DV/Walbro on 93oct at sea level. Furthermore, I dyno'd 248/238 stock (same Dynojet), so I only gained 46whp/31wtq. While still on the cat-back, I trapped 107-108 on 93oct, but I haven't done a 93oct run since adding the DP/TP, although I have trapped 113.7 on a mix of 110/93. All just for comparison's sake...

 

I also think the #'s are a little high for the mods i have done (especially on a mustang Dyno) but that's what they are #'s. it was done on 91 oct, there might have been some of the race gas leftove since i went to the track but it couldnt have been much. i have the dyno charts with A/F ratio's if you want them. i just need someone to host them. Do you think that with the re-flash i would dyno higher than someone with a MBC and a Fuel computer since it goes in and messes with the timing and ignition? not this week but next i will be back at the track to see what i can do. I will try a mix of 100 and 91 for 96-97Oct and see if that helps. i think the last time i was running around 108 oct on a 91 tune and ran to rich. thanks.

 

It doesn't help to run race fuel unless you can have control over fuel and boost. With the P2 flash, you have neither, so the best you can do is use a little 100oct (less than 50/50mix) in order to ensure full knock protection. When I use race fuel, I lean out my S-AFC quite a bit while also running 3-4 more PSI, which is why I tend to gain an estimated 30-40whp (probably even more torque).

No, a p2 flash wouldn't dyno higher than an MBC/S-AFC necessarily...it depends on how aggressive the flash is and how well the individual tunes with the S-AFC. In general, the flash will provide higher torque due to the mid-range timing that bottoms in the stock ECU maps, but not higher peak HP.

There's no doubt that your numbers are not actual MD numbers, so I'm not referring to that. I think they're high for even a Dynojet, since it's just 91oct. I dyno'd 248/238 and trapped 104 when stock. If you're at the same hp/tq as I am, despite having 91pisstane, then that would be very nice, but you'd need to be trapping 107-108 with straight 91...

 

Wow, glad I'm thinking about going the WORKS route, solid numbers, though slightly inflated, still gained solid numbers. . .

 

Unfortunately, he's not sure what he gained, since he didn't dyno in stock form. Normally, you can use comparisons like he was trying to give us (stock STi dynos 235-240), but without his actual numbers on the same dyno, we aren't sure what he gained. What we DO know is that he went from 100mph traps stock to 104mph with these mods and race gas. After he hits the track again without the higher octane leaded gas, maybe he'll do better from not being so rich, but we'll have to wait and see. What he should really do is just make some runs with straight 91oct to compare vs stock (100mph) and to validate his current dyno numbers...

 

That makes sense. next time at the track i will run strait 91 oct and see what happens. the tune is not very aggresive (staying in the mid to low 11's for the A/F ratio) which is fine by me. i do know the butt dyno does tell that i gained significantly in HP and TQ. i will try to recruit a stock 05' evo to get dynoed on the same dyno for a better comparison.

 

pretty good numbers...definately a bit inflated but hey good numbers none the less.