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Old 06-16-2009, 10:33 AM   #51
cowdilly
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Great posts and info.
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Old 07-06-2009, 11:48 PM   #52
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is it ok to use some no band intake or no band muffler to dyno tune my car? if i want to tune my car to cobb stage 2, do i need to buy the cobb protune? and how much they gonna change for the dyno tune? i'm sorry for my silly questions.
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Old 07-07-2009, 02:00 AM   #53
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The muffler makes no difference. The intake could be a BIG problem. If its a problem intake no amount of tuning in the world can fix a poorly designed intake with physical design problems. Bottom line is if you buy no name parts, expect no name performance and possible problems. If you can afford a WRX and you can afford to mod it, you can afford decent parts. If you can only afford generic parts, then you cant afford to mod the car to begin with. If you are just looking to save money, then save it and dont bother buying mods at all. I say this because the results are so varried, some people have great results, others have horror stories. A poorly designed cheap intake can (and has in many cases) cause you to lose the motor entirely. The muffler, like I said, that wont hurt anything. But cheap mufflers are almost always VERY loud, and their tone/volume changes dramatically over time, most people find them to not sound very good after a while.

If you want CObb stage 2, you need to buy an Accessport and flash the stage 2 map on the car, and install a downpipe. If you want a protune, you need to find a Cobb tuner in your area, and have them tune it. They will charge between the pretty much standard industry rate of $200 an hour, to as low as $200 total.

An intake or muffler doesnt dyno tune the car. Putting the car on a dyno, and having it tuned, dyno tunes the car.

Hopefully that clears some of it up for ya
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Old 07-07-2009, 02:17 AM   #54
my76wrx
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wow!! i'll take the intake out ASAP! 1 more question; if i install the downpipe but i don't have the accessport, can the tuner tune my car to cobb stage 2?
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Old 07-07-2009, 11:31 AM   #55
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Quote:
Originally Posted by my76wrx View Post
wow!! i'll take the intake out ASAP! 1 more question; if i install the downpipe but i don't have the accessport, can the tuner tune my car to cobb stage 2?
Not if he tunes with the AccessPort. If he tunes through Open-Source, then the AccessPort is just a fancy paper weight with shiny buttons.
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Old 07-07-2009, 11:40 AM   #56
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I took my 05 STi to DG Motors and read 338WHP with a 35R kit. Its on a Dyno Dynamics, which i've heard is the lowest reading dyno around. Any idea what i would see on a Mustang? I've heard that with my numbers on a Dyno Jet would be a 18% increase and would be at 399WHP....is this true?
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Old 07-07-2009, 03:42 PM   #57
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Quote:
Originally Posted by RiSti05 View Post
I took my 05 STi to DG Motors and read 338WHP with a 35R kit. Its on a Dyno Dynamics, which i've heard is the lowest reading dyno around. Any idea what i would see on a Mustang? I've heard that with my numbers on a Dyno Jet would be a 18% increase and would be at 399WHP....is this true?

We do not speculate on numbers. You wanna know what kind of power it makes, run it down the 1/4 mile about 15 times and take an average of the trap speeds, then we'll see if it's serious or not. Dynos can be fenagled to read whatever they want it to read (for the most part), so we can't tell you what you would make on another dyno.
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Old 07-07-2009, 05:26 PM   #58
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Quote:
Originally Posted by RiSti05 View Post
I took my 05 STi to DG Motors and read 338WHP with a 35R kit. Its on a Dyno Dynamics, which i've heard is the lowest reading dyno around. Any idea what i would see on a Mustang? I've heard that with my numbers on a Dyno Jet would be a 18% increase and would be at 399WHP....is this true?

Mustangs in general usually read the lowest. But even across the same model/brand dyno, things vary by a fairly large margin.

Dynos are pretty much useless as comparative tools unless you are talking about the same dyno, in the same shop. Even though people like to fool themselves into thinking they are the same.
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Old 07-13-2009, 12:01 PM   #59
drewmonroe05
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This is very thorough and will help a lot of people!! Good info
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Old 07-15-2009, 10:49 PM   #60
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thanks for the info
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Old 07-21-2009, 11:17 PM   #61
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Sooo I have a base 07 rex. What does it exactly take to hit 350 hp?
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Old 07-23-2009, 10:22 AM   #62
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Sooo I have a base 07 rex. What does it exactly take to hit 350 hp?

Please tell me you are joking
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Old 07-23-2009, 10:28 PM   #63
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Originally Posted by Defiant Autospeed View Post
Please tell me you are joking
lol
I am

Very informative thread
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Old 08-21-2009, 11:57 PM   #64
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I haven't done a lot to my car, but I put down 217 with a boost controller going in and out of boost while on the dyno. I left the shop and played with it and smoothed out the engine. I haven't been back yet to check it again. Thats not great , but not bad. I'm going for more of the handeling than all out hp.
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Old 08-26-2009, 06:21 PM   #65
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thanks for the advice
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Old 09-15-2009, 11:06 AM   #66
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I have 2007 WRX with 19K miles. Mods so far are:

Cobb DP (catted) and SPT 3" Catback
Accessport

Run of the mill Stage 2 with protune - currently 238WHP and 260wtq on 93 octain

Looking for best bang for the buck to be about 350WHP or more. Or rather, I'd like to be low 13's 1/4 mile or high 12's would be nice. Before the tune I ran 14.0's all day, I know I gained a couple of tenths from the tune but haven't been back to the track.

All tuning to be done at P&L Motorsports in Chicago. They have a Dynojet Dyno. Plan to do the tune next spring or summer, depending on when I would get all the parts installed. They don't tune with opensource so I'll keep the AP unless someone has a better idea.

What do I need for Turbo and supporting mods? Assume FMIC will be installed, or APS TMIC. I'd also like to consider a tune with e85 along with the 93.
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Old 09-17-2009, 08:18 PM   #67
PDC05WRX
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great post man thanks
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Old 09-19-2009, 02:13 AM   #68
DrumNWReX
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At the time my stock 06 wrx made 187hp/217tq on agile auto's dynapack on a cold day (between 35-45 degrees), if that helps anyone
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Old 09-19-2009, 09:10 AM   #69
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So I guess what you're saying is that it's NOT the numbers but the DIFFERENCE in the numbers when you're finished that really matters no matter what kind of dyno you're on.....yes?
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Old 09-19-2009, 03:06 PM   #70
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Great post! I'm going to dyno my STI before any upgrades to get a good base#(with all technical data listed here) then post it and updates as I upgrade.
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Old 09-22-2009, 02:51 PM   #71
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Quote:
Originally Posted by dspowersports View Post
I have 2007 WRX with 19K miles. Mods so far are:

Cobb DP (catted) and SPT 3" Catback
Accessport

Run of the mill Stage 2 with protune - currently 238WHP and 260wtq on 93 octain

Looking for best bang for the buck to be about 350WHP or more. Or rather, I'd like to be low 13's 1/4 mile or high 12's would be nice. Before the tune I ran 14.0's all day, I know I gained a couple of tenths from the tune but haven't been back to the track.

All tuning to be done at P&L Motorsports in Chicago. They have a Dynojet Dyno. Plan to do the tune next spring or summer, depending on when I would get all the parts installed. They don't tune with opensource so I'll keep the AP unless someone has a better idea.

What do I need for Turbo and supporting mods? Assume FMIC will be installed, or APS TMIC. I'd also like to consider a tune with e85 along with the 93.
Honestly you already have PLENTY of power for high 12s. If I had to guess, I would say that at this point its down to practicing. 14.0s is what stock 06-07s can do, a stage 2, untuned is a low 13s car, and tuned should hit 12s with a good driver. Drag racing is a lot harder than people like to think. I should know, I'm terrible at it

Going off the numbers you made at your mod level, getting to 350whp is a roughly 120whp increase. This is going to take a large turbo upgrade, and honestly, you are likely going to need internals shortly thereafter.

In your situation I wouldnt even consider anything smaller than a 20G and a FMIC, along with meth injection. And that power level on that dyno is good for high 11s. Its been done on lower mod levels.

If you are looking for a very streetable setup that is WAY more than capable of the numbers you want

TurboXS tmic
Blouch TD05-18G 8cm
750cc deatschwerks injectors walbro pump
Good intake (aps 65mm, aFe, something of the like)

Tune for 18.5PSI on 93 octane. Add meth injection and 19.5PSI if you really want to have something great.

You wont ever beat that setup for a day to day driver friendly experience. And it is definitely a mid 12second car any day of the week unless you live in Denver or something.

Last edited by Defiant Autospeed; 09-22-2009 at 02:59 PM.
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Old 09-22-2009, 02:57 PM   #72
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Quote:
Originally Posted by adrenalinejunkie View Post
Great post! I'm going to dyno my STI before any upgrades to get a good base#(with all technical data listed here) then post it and updates as I upgrade.
See, YOU are doing it SO right. Make sure if you want the best apples to apples comparison that you use the same dyno, and keep in mind that if the weather is way different on the next set of numbers, the numbers will be off.

I would love to see


3 pulls, average numbers to get baseline.
Reflash car and add downpipe
1 pull to heat everything back up, ignore numbers
3 pulls, average numbers to see real gains.

This could be done in the timespan of an hour or so, depending on what kind of dyno it is. 2-3 hours tops on any type of dyno.

Then for even more info, tune the car, then get tuned numbers.
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Old 10-01-2009, 11:27 AM   #73
bjolar
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I had no idea there was such a swing in readings. Thanks for the info!
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Old 10-16-2009, 03:05 PM   #74
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good info
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Old 10-18-2009, 03:40 AM   #75
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Great Post helped alot
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