Last post on Dec 13, 2005 at 1:13 PM
You are in the Speed Shop Tuning and Modification
What is this discussion about?
Subaru, Performance Mods, Coupe, Hatchback, Sedan, Wagon
#10 of 29 Re: Vishnu Chip [buddhabman]
by MrShift@Edmunds HOST
Mar 31, 2005 (7:57 pm)
A cat-back exhaust, which you will need on a street car, is only good for 3-4 HP as a rule, so that's not much for what you spend. I bet a cannister type air filtration system (ram-effect) would help. I've heard there are some slick ones coming out of Europe that might get you 7-8HP at high rpm.
Apr 01, 2005 (9:00 am)
Well this is what happens with mods...you need to shake the bugs out, sometimes over and over again. I thought it was interesting that to gain 82 HP they had to install a new exhaust system, a new turbocharger housing, new camshafts and cam gears, and a remapped engine computer. This is a far cry from just a "chip" for 50 HP.
We have an EVO out here in the Bay Area that is apparently putting out about 800HP with a stroker kit and all kinds of other radical works. Problem is, the car has no armor shielding and nobody is willing to dyno it---too risky for personnel and liability to the car.
Sounds like their EVO was running too lean, a common mistake when creating more boost from TC or SC.
#13 of 29 Re: Vishnu Chip [buddhabman]
Apr 06, 2005 (10:08 am)
I want that...
But $750 for them to perform a few minutes of work on the ECU seems excessive...
If I could get it for $300 - $500 I would seriously consider it.
What happens to my factory warranty if I get the ECU reflashed?
Apr 06, 2005 (11:25 am)
I think it's toast. Apparently some dealers now have equipment that can tell as soon as they hook up.
#16 of 29 Anyone has used the VISHNU 50hp ECU refresh for Legacy????
May 17, 2005 (6:47 am)
I was just curious...
Was just curious if anyone got his/her 2.5GT a Vishnu ECU refresh?
How was the feeling? Incredible difference?
I have drive the WRX with Vishnu ECU refresh Stage Subzero - 265hp, and the punch increase is very noticeable....(talking manual transm here btw).
Also, does anyone here know how fas the sportshift transmission changes gears???? Both in the S mode and changing gear manually.....
Any advise is very welcome...
Thanks in advance guys,
Boston - MA
May 17, 2005 (1:52 pm)
Vishnu all the way, call them and see what they offer. I know fellow Evo owners love that shop and same goes for STI guys.
#18 of 29 Ecutek Reflash
Jul 21, 2005 (9:28 am)
is the way to go. I had my WRX done at www.grdperformance.com in addition to full, catless race exhaust. I wound up at 215-220 whp&wtq vs. 165-170 bone stock. The difference is amazing particularly with spool up and powerband width.
Vishnu does the same thing that most Ecutek reseller/installers do. They access your ECU the same way your Subaru tech dept would if you brought it in for repairs - via the OBDII port. Unlikes "chips" or "piggybacks" that require cutting or splicing of OE wiring harnesses there is no physical evidence of a reflashing...nor can they prove it.
40-50whp and 50-60wtq are common improvement ranges on the current iteration reflashes for the Legacy GT. AWD dyno time plus a new DP might add another 10-15whp/wtq and a new UP maybe 5-10whp/wtq.
$750 is a BARGAIN for 20%+ power improvements - there is no other bolt-on that can replicate it for the price/value/reliability/warranty issues. You could waste $1-1.5K on a TBE exhaust only to get a loud, smelly car with nominal 10whp/wtq gains.
As for competition Volvo makes a Type R V70 at 300hp, BMW's 540iT was about 290hp and the S6 Avant was 340hp.
You could have a sleeper Legacy GT that is faster, more powerful and more reliable than any of the above for <50% of the cost of any of the above.
#19 of 29 I would not use
Jul 21, 2005 (11:22 am)
"faster, more powerful and more reliable" to describe car that had its ECU modified.
Did you read the nightmare Car&Driver had with their Vishnu modified Evo?