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Old 06-09-2007, 05:45 PM   #1 (permalink)
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False dyno reports from magnaflow

I was surfing the sky forum and came across an interesting tidbit. RPI ,which is a supporting vendor here called tech support at magnaflow.He asked them what kind of h.p. gains he could expect from their 3" catback exhaust.Btw he is a magnaflow dealer.He was told he could see about 6h.p. Yes folks SIX h.p. Not the 20 to 30 h.p. that they previously bragged about. They also told him that NO WAY would you ever see gains like that. Btlfed who posted the earlier dyno sheets was not available for comment.
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Old 06-09-2007, 06:15 PM   #2 (permalink)
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Maybe those were the gains for the base solstice and not the gxp. I seriously doubt it only picked up 6hp, its simply not possible imo. The muffler must be very restrictive if the gains were that low, because the 3" pipe certainly isnt.
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Last edited by shabby : 06-09-2007 at 06:17 PM.
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Old 06-09-2007, 06:25 PM   #3 (permalink)
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Maybe those were the gains for the base solstice and not the gxp. I seriously doubt it only picked up 6hp, its simply not possible imo. The muffler must be very restrictive if the gains were that low, because the 3" pipe certainly isnt.
surprised you would say this...our ecu restricts torque, it will pull timing and booste...without an ecu tune you're not gonna see too much of anything no matter what you do
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Old 06-09-2007, 06:44 PM   #4 (permalink)
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It wont pull boost/timing after a mere 6hp increase, slowboy put a manual boost controller on a gxp and saw 50 ft/lbs gains on the dyno and the ecm didnt do nothing.
Since rpi has access to a dyno and magnaflow products he should dyno it, because simply i dont believe the 6hp gain.
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Old 06-09-2007, 10:04 PM   #5 (permalink)
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Maybe he meant wheel horsepower?
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Old 06-09-2007, 10:19 PM   #6 (permalink)
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He asked them for stats on a sky redline,and it was 6whp.go over to the sky forum and check it out. He has also dynoed something like 9 sky redlines with aftermarket cai's and saw 0h.p increases and some lost h.p.
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Old 06-10-2007, 08:32 AM   #7 (permalink)
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Post some links.
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Old 06-10-2007, 11:41 AM   #8 (permalink)
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http://www.skyroadster.com/forums/sh...t=13896&page=2
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Old 06-10-2007, 01:45 PM   #9 (permalink)
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Hi Guys. I think that the Magnaflow rep got the base model and the turbo confused/read wrong/miscommunicated etc. Our Dyno numbers are very real and a lot more than 6 HP. Magnaflow's dyno results should be very similar to our Mach dyno's. We just put the systems on and dyno'd them. We didn't wait a day to let the computer adjust or reset anything. Magnaflow's configuration is a bit different than ours but the dyno results have to be close.
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Old 06-11-2007, 12:27 AM   #10 (permalink)
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Just installed a Magnaflow on my GXP today and my butt dyno says that there is a real improvement, especially at mid-range. Is it 25hp? Hard to say, at the top end it doesn't feel like that much but there definitely is more power. The biggest difference is at part-throttle where the boost builds quite a bit quicker. We'll see what it does at the autox this weekend but so far I'm pretty happy.
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Old 06-11-2007, 12:29 AM   #11 (permalink)
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Im not here to argue. Anyone that knows anything about these cars and tuning (aside from internet rice tuners) will know, you are NOT going to get those gains realisticly. And YES, the Magnaflow rep knew it was the redline or gxp. I mean unless there is another 2.0L turbo sky or solstice model. He said the 20-30hp gain was probably with an upgraded turbo or higher boost being ran. You would never get 30hp from bolting on our GT exhaust to a stock gxp or redline either. Its time to stop the nonsense either. I've said it before, if someone has an exhaust that is going to make 30hp gain on a stock car, bring it and if you make the power, the dyno session would be free. For the doubters, why dont you just call Magnaflow and ask them. Tell them you are going to do a before/after dyno and if you dont get what was claimed youll want a refund. The techs there are very knowledgable and will give you a straight answer.
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Old 06-11-2007, 01:34 PM   #12 (permalink)
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Quote:
Originally Posted by GOINGSOLO View Post
Hi Guys. I think that the Magnaflow rep got the base model and the turbo confused/read wrong/miscommunicated etc. Our Dyno numbers are very real and a lot more than 6 HP. Magnaflow's dyno results should be very similar to our Mach dyno's. We just put the systems on and dyno'd them. We didn't wait a day to let the computer adjust or reset anything. Magnaflow's configuration is a bit different than ours but the dyno results have to be close.
Hi Goingsolo,
A question. In the thread announcing the Solo Performance "Street Race Kit" on February 11th here on the Forum, dyno results were posted from runs with the full "Race Kit". It was suggested in the post that "Street Race Kit" dyno results would be coming soon and should be very close to the results of the "Race Version". Have they been done and are they available?
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Old 06-11-2007, 02:17 PM   #13 (permalink)
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Hi Bird. Going by memory the Street Race dyno results were about 3-4 wheel HP lower than the Race kit. I have looked for the Street Race results once before but with no luck. The transition point is the stamped y section and the interference there causes the lower gains.
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Old 06-11-2007, 05:46 PM   #14 (permalink)
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Originally Posted by RPIpower View Post
Im not here to argue. Anyone that knows anything about these cars and tuning (aside from internet rice tuners) will know, you are NOT going to get those gains realisticly. And YES, the Magnaflow rep knew it was the redline or gxp. I mean unless there is another 2.0L turbo sky or solstice model. He said the 20-30hp gain was probably with an upgraded turbo or higher boost being ran. You would never get 30hp from bolting on our GT exhaust to a stock gxp or redline either. Its time to stop the nonsense either. I've said it before, if someone has an exhaust that is going to make 30hp gain on a stock car, bring it and if you make the power, the dyno session would be free. For the doubters, why dont you just call Magnaflow and ask them. Tell them you are going to do a before/after dyno and if you dont get what was claimed youll want a refund. The techs there are very knowledgable and will give you a straight answer.
So what do I get from you guys if I prove you wrong?

I'm not saying it's 20hp because every dyno is different. I've been meaning to go back and test out the mods I've done and see what I can get out of the car now.

Oh and you might want to look into the Subaru world. We make 20+ whp gains all the time from a cat back... Turbo cars make a lot more when you free up the exhaust restrictions... the stock exhaust system on the GXP is rediculous... It's like some kid made it in shop class.
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Old 06-11-2007, 05:53 PM   #15 (permalink)
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So what do I get from you guys if I prove you wrong?

I'm not saying it's 20hp because every dyno is different. I've been meaning to go back and test out the mods I've done and see what I can get out of the car now.

Oh and you might want to look into the Subaru world. We make 20+ whp gains all the time from a cat back... Turbo cars make a lot more when you free up the exhaust restrictions... the stock exhaust system on the GXP is rediculous... It's like some kid made it in shop class.
I just got off the phone with Richard at Magnaflow. He put me on hold and spoke to their engineering department and they told him its more of a 22hp gain. Guys, really, I am not here to argue. We sell Magnaflow products and I just want to make sure OUR customers are not informed or given false hopes. I've been dynoing cars for 9 years now (on both dynojet and not dyno dynamics) and I ask the same thing to the customers each time. "How much power are you expecting?" Its sad because they were always told one thing when making a purchase for mods then are dissappointed when they dont see what they expected.

The key to our success is being honest with our customers. Now you guys were just told 30hp, and Rich just checked with Engineering and they told me 22hp. LOL, which is it? First 6, then 30, now 22? Anyone with a Magnaflow exhaust can come dyno. I have atleast 5 redline base runs for you to compare them to. Those are strong words John. If anything your information is misleading and pulled right out of the riceboy archives. We've been selling Magnaflow/Carsound products for almost 9 years now so there is no reason for us to mislead our customers.

How many of you have ever tuned a car in your life? Typically exhaust or muffler shops are just that...muffler/exhaust shops. They dont tune cars nor do they build them.
The Skys have torque management and limits. See below:

The pcm needs to be tuned or else the gains will be compromised.
Here is another screen shot:

You guys are taking it personally and you shouldnt. The attacks on me only show that some people might feel threatened by me. Either that or they dont want facts given out.

Last edited by RPIpower : 06-11-2007 at 06:53 PM.
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