I am a Shiv Vishnu convert
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Joined: Jul 2003
Posts: 39
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From: People's Republic of Kalifornia
Originally Posted by 992gnt
So looking at number gain alone, you picked up 39 hp and 28 lb ft from 264's, cam gears, and a custom flash. Those aren't bad numbers, but I don't see the clear advantage over a Dynoflash (or any other method for that matter). The area under the curve would tell a lot there, do you have a dyno chart? But hey, as long as you're happy and Shiv is taking care of you it doesn't matter what I think. 
So prior to the dyno on saturday I added a fuel pump, 264 camshaft, cam gear and ams lmic pipe. My baseline run on a Dynojet reveal number as follow: 253 whp and 267 torque with 21psi .
Well the Dynoflash can't adjust automatically for the addition of cams and cam gears, and the same is true of all EMS's. Just as the Xflash was tuned specifically for the new mods, the Dynoflash (or emanage or S-AFC) needs to be reconfigured for the new mods. I would expect poor numbers if I put cams in my car and didn't re-tune.
Well the Dynoflash can't adjust automatically for the addition of cams and cam gears, and the same is true of all EMS's. Just as the Xflash was tuned specifically for the new mods, the Dynoflash (or emanage or S-AFC) needs to be reconfigured for the new mods. I would expect poor numbers if I put cams in my car and didn't re-tune
Originally Posted by gashero
Well, I am sure if Al custome tune my car I would have gain some power also, but I just want express my opinion that Shiv is very bright young man and he does know his product and he does care that his cutomer is getting satisfaction with his product.
Thanks Shiv you made a believer out of me.
Thanks Shiv you made a believer out of me.
Dont forget gashero even said that Al could have made more hp in a custom tune over the mail in dynoflash. Gashero's just commenting that he felt Shiv did a great job and that shiv knows his products. Please stop turning things into comparison debate.
Terry S
Originally Posted by 992gnt
Well the Dynoflash can't adjust automatically for the addition of cams and cam gears, and the same is true of all EMS's. Just as the Xflash was tuned specifically for the new mods, the Dynoflash (or emanage or S-AFC) needs to be reconfigured for the new mods. I would expect poor numbers if I put cams in my car and didn't re-tune.
l8r)
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Joined: Jan 2004
Posts: 137
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From: naperville, Il
You guys or gals, I am not trying to turn this into a tuner debates, just that I am very happy with the result, I mean what other mods can produce around 40 whp for 400 bucks. I think it is the best bang for the buck. I also forgot to mention that the car is so freaking smooth now it jus pull steadily all the way to redline.
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Joined: Mar 2005
Posts: 62
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From: Dearborn
Shiv,
I am an engineer working at Tier 1 supplier that designs engine managment systems.
I curious to know how much power loss (percentage-wise) you can expect the EVO to have in a sustained spirited driving situation. You are right in that the stock ECU will compensate for environmental conditions, and exhibit knock control, but this comes at a price.
From your experience, do you know how much power loss an EVO can experience under sustained heavy driving? Or is the the power loss minimal?
Don't get me wrong, I am a "fan" of yours. After I get my EVO, I might just come to you for tuning...
I am an engineer working at Tier 1 supplier that designs engine managment systems.
I curious to know how much power loss (percentage-wise) you can expect the EVO to have in a sustained spirited driving situation. You are right in that the stock ECU will compensate for environmental conditions, and exhibit knock control, but this comes at a price.
From your experience, do you know how much power loss an EVO can experience under sustained heavy driving? Or is the the power loss minimal?
Don't get me wrong, I am a "fan" of yours. After I get my EVO, I might just come to you for tuning...
Originally Posted by Dustin@Vishnu
What you say may carry some truth if he was running a stand-alone ecu with fixed tming/fuel maps. Your comments do not apply to a stock ECU application which has more than enough adaptability to handle just about anything you can throw at it. Dual maps, floating ignition and fuel trims, adapting knock sensing, etc,. Additionally, without knowing timing advance values, concluding that any specific AFR (within reason of course) is unsafe or safe is impossible.
Needless to say, we're still running an XFlash/XEDE combo on our race car because of the flexibility and safety margin that it affords. I'm reasonably confident that a stand-alone set-up wouldn't have been able to handle the wide range of altitudes, temps and driving conditions that we subjected the car to during One Lap of America with *serious* re-tuning between events.
gashero-- Thanks for the kind words. I appreciate it. Let me know if you need more help with your car
Shiv
Needless to say, we're still running an XFlash/XEDE combo on our race car because of the flexibility and safety margin that it affords. I'm reasonably confident that a stand-alone set-up wouldn't have been able to handle the wide range of altitudes, temps and driving conditions that we subjected the car to during One Lap of America with *serious* re-tuning between events.
gashero-- Thanks for the kind words. I appreciate it. Let me know if you need more help with your car
Shiv
