Hyper grounding system +15 rwhp???
#1
Full Member
Thread Starter
Join Date: Feb 2002
Location: cromwell,CT
Posts: 229
Likes: 0
Received 0 Likes
on
0 Posts
Hyper grounding system +15 rwhp???
In the december 2002 issue of Import tuner they did a dyno on a 1995 Rx-7 with the following mods: "Stock engine, Apexi GT front mount intercooler, RSR catback exhaust, Apex Power FC tuned by XS, 550cc primary injectors, 1300cc secondary injectors, stock twin-turbos"
rpm Before After Gain
3000 129.2 134.7 5.5
3500 163.8 166.2 2.4
4000 185.5 186.6 1.1
4500 233.3 240.0 6.7
5000 265.7 274.5 8.8
5500 289.3 298.9 9.6
6000 306.6 311.4 4.8
6500 313.0 328.3 15.3
7000 320.7 330.3 9.6
Before is the rwhp before adding the ground kit.
After is the rwhp after adding the ground kit.
Gain is the amount of rwhp gained from using the ground kit.
What do you guys think? Thats a gain of 15.3 rwhp @6500 rpms not bad for only like 90 bucks....
rpm Before After Gain
3000 129.2 134.7 5.5
3500 163.8 166.2 2.4
4000 185.5 186.6 1.1
4500 233.3 240.0 6.7
5000 265.7 274.5 8.8
5500 289.3 298.9 9.6
6000 306.6 311.4 4.8
6500 313.0 328.3 15.3
7000 320.7 330.3 9.6
Before is the rwhp before adding the ground kit.
After is the rwhp after adding the ground kit.
Gain is the amount of rwhp gained from using the ground kit.
What do you guys think? Thats a gain of 15.3 rwhp @6500 rpms not bad for only like 90 bucks....
#2
Weird Cat Man
I'll tell you how to make your own for 5 bucks.
Get some sandpaper, Vaseline, and the service manual. Every single place there is a ground on the car, remove it, sand the surfaces, clean it up, and apply some Vaseline and tighten the bolt back down. You will have good grounds then.
Come on, what are they selling you for 90 bucks?
Brian
Get some sandpaper, Vaseline, and the service manual. Every single place there is a ground on the car, remove it, sand the surfaces, clean it up, and apply some Vaseline and tighten the bolt back down. You will have good grounds then.
Come on, what are they selling you for 90 bucks?
Brian
#5
Junior Member
Join Date: Oct 2002
Location: Fayetteville, Ga.
Posts: 44
Likes: 0
Received 0 Likes
on
0 Posts
Originally posted by rx7raca
lol that is really funny, im about to do what brian says, will it make the car have increase in hp just by cleaning some ground wires?
lol that is really funny, im about to do what brian says, will it make the car have increase in hp just by cleaning some ground wires?
#6
Chimera Driver
Join Date: Jul 2001
Location: Birmingham, AL
Posts: 1,334
Likes: 0
Received 0 Likes
on
0 Posts
Don't forget to grease your muffler bearings. Good for at least 6 RWHP.
People need to stop thinking you can get something for nothing. Remember, you get what you pay for.
People need to stop thinking you can get something for nothing. Remember, you get what you pay for.
Trending Topics
#8
Senior Member
Join Date: Apr 2002
Location: Greensboro, NC
Posts: 402
Likes: 0
Received 0 Likes
on
0 Posts
ever since I moved my exhaust system and mounted it on the passender side door panel I have gained a total of 5 ponies at the flywheel. Never knew of such a cheep way of getting extra ponies.
Garrett
Garrett
#9
Infamous...Butcher...
Join Date: Feb 2002
Location: WA
Posts: 510
Likes: 0
Received 0 Likes
on
0 Posts
There are...
...literally dozens of these kits I see advertised in Options, Carboy, Revspeed etc etc all the time, and most claim 3-7ps or so. The only way I could see it working, is what has been said - by fixing an already faulty/insufficient grounding point.
Remember to flush and refill your blinker fluid monthly too..
Remember to flush and refill your blinker fluid monthly too..
#11
Senior Member
Join Date: Apr 2001
Location: Dirty South
Posts: 284
Likes: 0
Received 0 Likes
on
0 Posts
I thought the article said that XS Engineering did the test on a dyno and the RX-7 showed the most gains. It also said XS did the test on 2 other cars and they all showed gains just not as much.
#12
Senior Member
Join Date: Jan 2002
Location: Wausau WI
Posts: 689
Likes: 0
Received 0 Likes
on
0 Posts
I wouldnt trust anything Import Tuner publishes. Any car can get in that mag as long as it has a stupid paint job, a body kit, and an absurdly loud (and heavy) stereo.
#13
Speed Mach Go Go Go
iTrader: (2)
Join Date: Oct 2001
Location: My 350Z Roadster kicks my RX7's butt
Posts: 4,772
Likes: 0
Received 2 Likes
on
2 Posts
Wasn't that headlight fluid and two transmissions?
I have the tornado in my Honda. It probably does something but it is the gains worth $75? Hey, it costs a fortune to gain HP on a Honda.
I have the tornado in my Honda. It probably does something but it is the gains worth $75? Hey, it costs a fortune to gain HP on a Honda.
#14
It's never fast enough...
Join Date: Feb 2001
Location: Miami - Given 1st place as the POOREST city in the US as per the federal government
Posts: 3,760
Likes: 0
Received 3 Likes
on
3 Posts
Originally posted by GoRacer
Wasn't that headlight fluid and two transmissions?......
Wasn't that headlight fluid and two transmissions?......
#16
Full Member
Join Date: Apr 2001
Location: Montclair, CA
Posts: 227
Likes: 0
Received 0 Likes
on
0 Posts
Wow I actually wanted to buy this thing. I talked to a 3rd gen owner at Seventock and he told me he got a gain of 10 hp to the wheels. The company is called sunautomobile they have a website http://www.sunautomobile.com but the guy told me it cost like $150 and paid to get it installed
#18
Banned. I got OWNED!!!
Join Date: May 2002
Location: Oklahoma
Posts: 310
Likes: 0
Received 0 Likes
on
0 Posts
I have to raise the flag again. Plus talk to Jason at www.jt-imports.com he has a hook-up on SUN auto parts
Matt
#19
WTB** Very Low Miles 94-95
Join Date: Jul 2001
Location: Tejas
Posts: 3,298
Likes: 0
Received 0 Likes
on
0 Posts
when i was tuning with the datalogit we found that if the car was not grounded properly that we did NOT get accurate readings....now here is the thing...if they didnt get accurate afr readings and the afr was too rich a proper ground would enable them to tune it to the right afrs and thus would gain more power.
there is a connection there...between accurate tuning and proper grounding....and I dont fully understand the math but it does exist...
basically...if you had a car grounded like **** and tried to tune it you would not be able to tune it properly because of discrepancies in the readings...what you think 11.2 afrs are might actually be higher or lower than that depending on how the car is grounded...making it impossible to add the right amount of fuel.....and since proper tuning equals more power these fools that sell these kits claim more power from them.
j.
there is a connection there...between accurate tuning and proper grounding....and I dont fully understand the math but it does exist...
basically...if you had a car grounded like **** and tried to tune it you would not be able to tune it properly because of discrepancies in the readings...what you think 11.2 afrs are might actually be higher or lower than that depending on how the car is grounded...making it impossible to add the right amount of fuel.....and since proper tuning equals more power these fools that sell these kits claim more power from them.
j.
#20
WTB** Very Low Miles 94-95
Join Date: Jul 2001
Location: Tejas
Posts: 3,298
Likes: 0
Received 0 Likes
on
0 Posts
btw...the new datalogit software has an equation? to make up for the above grounding issue and makes it possible to get proper readings even if the wideband does not have exactly the same ground as the ecu...or so Im hearing from the datalogit guys.
j
j
#22
development
Originally posted by rx7_lover
sandpaper, Vaseline... got'em.
how about replacing all the stock wires with thicker wires while at it?
sandpaper, Vaseline... got'em.
how about replacing all the stock wires with thicker wires while at it?
#23
I won't let go
Ok...look at it this way. Bad grounds= more resistance in the electrical system=more resistance on the alternator=more strain on the motor=less HP. Dunno about a full 10HP. Just clean your grounds. A wire brush and some non corrosive goop will work...careful with vasaline. Petrolium based....don't get any on your wire jackets.