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Old 08-19-2009, 04:36 AM   #1
sartre311
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Default Strange Situation, NEED HELP ASAP

Ok guys I'm in a bit of a bind. Ok a pretty dam big inconvenience. I ordered some 740cc side feeds from deatschwerks, got em, installed them and when my tech went to put a basic tune on them so we could get the car to the dyno they weren't behaving like 740's but rather 550's. I'm using the cobb accessport with the supporting software to tune. When the tech went to dial in the numbers he used the presets that cobb has for the 740's and the car ran like crap and then he decided to try out the stock presets and it ran perfectly, what gives? Other than deatschwerks completely screwing up and sending me 550's, are there any other variables that can be responsible for the presets set for 740's to be causing the car to act up?

Anyone available locally (phoenix) that knows about tuning with accessport, willing to take a look?

05 sti

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740cc deatschwerks (supposedly)
hks bov
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Old 08-19-2009, 04:52 AM   #2
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If you are running an accessport. You are better off going to Clark Turner. He's one of the few in AZ that is certified to tune those AP's. He will be able to figure out what could possibly be wrong.

www.clarkturner.com
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Old 08-19-2009, 05:36 AM   #3
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If you are running an accessport. You are better off going to Clark Turner. He's one of the few in AZ that is certified to tune those AP's. He will be able to figure out what could possibly be wrong.

www.clarkturner.com
Would rather not go to goodspeed, bad experience. Any insight based on my description?
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Old 08-19-2009, 07:19 AM   #4
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You don't have to go to Goodspeed to talk to Clark himself. He works out of home for most part. Give the man a call and chat with him.

otherwise, ditch the accessport and hit up the guys at FAT.
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Old 08-19-2009, 10:57 AM   #5
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I agree ithe bobby. If it was me, I'd ditch the ap for 500 bucks and use that to pay for a good opensource tune and have some money left over. That's just me though.
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Old 08-19-2009, 12:29 PM   #6
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You guys are gay with this "ditch the AP" i like the AP i have all 3 cars

Phil, who are you having trying to tune it?? because i don't believe there is anyone else in the area besides clark that can protune
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Old 08-19-2009, 02:05 PM   #7
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No, I agree Jay, it's not a bad product at all, but you can increase your options tunerwise to go to an opensource setup. Also, if he wants to get into tuning it himself later, opensource has a great support community and tools to help you learn about what you're doing.

I also have been disappointed with the OTS maps on the AP because of their conservative nature (I understand why Cobb does this of course) and I think its silly how many people drive around with all this performance left on the table, because they think an AP with the OTS maps is where it's at.

Clark's doing tunes over email for the AP now right?
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Old 08-19-2009, 02:07 PM   #8
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clark does the email tunes along with road tunes, and also tunes for goodspeed
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Old 08-19-2009, 02:12 PM   #9
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No, I agree Jay, it's not a bad product at all, but you can increase your options tunerwise to go to an opensource setup. Also, if he wants to get into tuning it himself later, opensource has a great support community and tools to help you learn about what you're doing.

I also have been disappointed with the OTS maps on the AP because of their conservative nature (I understand why Cobb does this of course) and I think its silly how many people drive around with all this performance left on the table, because they think an AP with the OTS maps is where it's at.

Clark's doing tunes over email for the AP now right?
I personally know phil (OP) i don't believe he is going to get into tuning himself, i might be wrong, but just what i think

also If cobb sold the AP with better maps and peoples cars blow up they are going to blame cobb, just like if someone gets there car tuned and it blows up most people will blame the tuner.
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Old 08-19-2009, 02:54 PM   #10
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No, you're right Jay, I understand why Cobb's maps are so conservative. They have to have a Stage II map to fit both the experienced, well built stage II car as well as the car owned by some jack-off who knocked the cat out of the factor downpipe, redlines it when it's 115 out, and changes his oil every 15000 miles.
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Old 08-19-2009, 03:08 PM   #11
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Quote:
Originally Posted by sartre311 View Post
Would rather not go to goodspeed, bad experience. Any insight based on my description?
Didn't you just get tuned out by Snail Performance, what are they seeing? the injector dead times would need to be known because the DW injectors can be from any color set drilled out to 740cc...blues, yellows, dark blues, etc..
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Old 08-19-2009, 05:05 PM   #12
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sartre311, I understand you like the AP. I do to. That being said, the convenience of open source tuning also makes it a great option, as others have said. Perhaps a good way to get the best of both worlds is to get one of the StreetTuner programs Cobb. I have the ST and really like that I can make small (or large) adjustments. This will allow you the freedom to use any tuner you want (including yourself), and still get to use your AP. You could also get a seperate E85 tune done and be able to easily swap between them.

Quote:
Originally Posted by kpluiten View Post
No, you're right Jay, I understand why Cobb's maps are so conservative. They have to have a Stage II map to fit both the experienced, well built stage II car as well as the car owned by some jack-off who knocked the cat out of the factor downpipe, redlines it when it's 115 out, and changes his oil every 15000 miles.
Agreed. Environment also plays a big part in it (which is part of the reason OEM tunes are so conservative too). Cobb's facility is in SLC (which is like Flagstaff). So, like a factory car, it has to be able to perform reliably in Flagstaff (cooler, high altitude) and Phoenix (blazing hot, low altitude) on the same tank of gas. If it is during the monsoon season, throw in the "dry-as-a-bone" vs. "pouring outside" variable into the mix.
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Old 08-19-2009, 06:17 PM   #13
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i know some on here bash dyno comp but rich has runed 3 of my vehicles on a accessport and i have never had any problems, just strong well running subies!
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Old 08-19-2009, 08:31 PM   #14
sartre311
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I've read some solid reviews about Mark Jones at FAT, spoke to him over the phone and he took the time to really get to know my car and my goals. Seems actually involved rather than distant and unconcerned like some other tuners I've met in the area. Anyways, it sounds as if the injector issue I'm having is due to a tuner error. I've scheduled an appointment at FAT tomorrow and will keep you guys posted.
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Old 08-19-2009, 09:21 PM   #15
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clark turner is awesome. hes a great guy, and a great tuner. if ur looking for a great cobb tuner, hes the man.
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Old 08-19-2009, 10:56 PM   #16
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Originally Posted by Momosaurus WRX View Post
clark turner is awesome. hes a great guy, and a great tuner. if ur looking for a great cobb tuner, hes the man.
Agreed, there most certainly isn't any "tuner" in the valley that has done more AP tunes. Sounds like your last tuner didn't know what he was doing.
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Old 08-20-2009, 12:50 AM   #17
sartre311
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Agreed, there most certainly isn't any "tuner" in the valley that has done more AP tunes. Sounds like your last tuner didn't know what he was doing.
Well if Clark ever returned phone calls I might give him a chance, Mark seems like a more down to earth guy, hopefully deatschwerks sent me the right injectors and it was just a tuner error on my other guys part. He plugged in the scales (34xx something, whatever cobb recommends) for the 740's and the trims seemed to be maxing out at 25 and the a/f ratio was jumping around 15.8. He didn't mess with the latency at all, said it wouldn't make all that big of a difference. When you got on the throttle the car would just die out as if it wasn't getting enough fuel.

Hope that gives you guys a clearer picture until I can verify tomorrow for sure. Would there be any circumstances 740's would behave that way?
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Old 08-20-2009, 04:58 AM   #18
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the a/f ratio was jumping around 15.8. He didn't mess with the latency at all, said it wouldn't make all that big of a difference.
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Old 08-20-2009, 05:32 AM   #19
sartre311
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As in duh tweaking latency would make a big difference?
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Old 08-20-2009, 05:37 AM   #20
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I'm no tuner, but I would think so. Was your AFR's jumping around at idle?
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Old 08-20-2009, 05:44 AM   #21
sartre311
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I'm no tuner, but I would think so. Was your AFR's jumping around at idle?
Oh ya, and I mentioned "you sure you don't wanna try tweaking the latency" and he says "It won't make that big of a difference, trust me I've tuned many sti's" I gave the guy a shot because Rich from Michael Crawford subaru recommended him, who is a solid tech, and said he tuned his car and it was running crispy.

The only thing that worries me is the trims were maxed out at 25 and wouldn't go up any further when he plugged in the scaling for the 740's, not sure if tweaking the latency would allow the trims to come up higher. Can anyone chime in on that?

Although I wouldn't say the afr was jumping erradicly at idle just your typical four tenths above and below 15.8
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Old 08-20-2009, 05:47 AM   #22
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Hmm. I'm not too sure. I'll go dig around NASIOC for you tho, see what I can come up with
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Old 08-20-2009, 05:50 AM   #23
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Hmm. I'm not too sure. I'll go dig around NASIOC for you tho, see what I can come up with
Appreciate it bro!
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Old 08-22-2009, 06:45 PM   #24
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Problem solved, dude never adjusted the latency settings.
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Old 08-22-2009, 06:51 PM   #25
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clark answers my calls its good u got everything fixed
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