JP Magazine Homepage JP Magazine
Get Adobe Flash player

1999 Jeep Wrangler XJ - The Insane Inline Update

1999 Jeep Wrangler Xj Hood Opened Front View
Test 1: Baseline with new cam & Banks Torque Tube
RPMHPTORQUEAIR/FUEL RATIO
2,90012422414.3:1
3,00012822313.3:1
3,10013322513.0
3,20013922713.0:1
3,30014422913.0:1
3,40014822813.0:1
3,50015222812.9:1
3,60015522612.7:1
3,70015922612.5:1
3,80016022112.3
3,90016522212.3:1
4,00016521712.2:1
4,10016721412.1
4,20016921212.0
4,30017221011.9:1
4,40017120411.7
4,50016719511.6
4,60016418711.5:1
4,70016718611.5
4,80016818411.6
4,90016818011.6
5,00016817611.6
5,10016216711.6

Test 2: Unichip dyno tune
RPMHPTORQUEAIR/FUEL RATIO
2,90012723014.0
3,00013223113.5
3,10013623113.1
3,20014223213.1
3,30014723513.2
3,40015123313.2
3,50015623413.3
3,60015823113.3
3,70016223013.3
3,80016723113.2
3,90016822613.2
4,00017222613.1
4,10017522513.1
4,20017822213.0
4,30017921813.0
4,40018021513.0
4,50018021013.0
4,60018020513.0
4,70018320413.0
4,80018420213.1
4,90018419813.1
5,00018018913.0
5,10017718313.0

1999 Jeep Wrangler Xj Accell Injectors
Since dyno time is money and... 
   
  read full caption
1999 Jeep Wrangler Xj Accell Injectors
Since dyno time is money and our stroker ran rich with the 24 lb/hr Accell injectors we originally installed, we had the company ship us some PN 150121 21 lb/hr injectors in case we couldn't thin out the mixture enough with the Unichip reprogrammer. It turns out our 24 lb/hr units were useable, but make sure you bring any components you may need along with you to the dyno.
Unichip Wrapped In Box
The Unichip allows for nearly... 
   
  read full caption
Unichip Wrapped In Box
The Unichip allows for nearly infinite adjustments to the air/fuel and timing maps of the factory computer. Compatible with both OBDI and OBDII systems, the Unichip can modify anything the vehicle's original ECU controlled, but unlike some aftermarket reprogrammers, it doesn't interfere with any stock ECU programming. It can run anything from transmission shift points to speedometer corrections.
10 Pound Nitrous Bottles Nos Two Noses
We also ordered two extra... 
   
  read full caption
10 Pound Nitrous Bottles Nos Two Noses
We also ordered two extra 10-pound nitrous bottles from NOS because we weren't running a pressure gauge. The lower the tank pressure, the less performance you'll get out of a nitrous system. It's also a good idea to run a bottle heater to keep the nitrous inside between 75 and 85 degrees for the proper pressure. Check out our dyno numbers to see why.
TEST 3: NOS WITH BOTTLE AT AMBIENT TEMP
RPMHPTORQUEAIR/FUEL RATIO
2,90010919814.74
3,00015627313.6
3,10016828411.4
3,20019031111.49
3,30020432512.0
3,40019930811.7
3,50020330511.7
3,60021030611.7
3,70021029811.61
3,80021329511.4
3,90020627711.35
4,00022028911.4
4,10022228411.4
4,20022528111.4
4,30022627511.5
4,40022026311.5
4,50021725411.5
4,60022425511.5
4,70022625211.6
4,80022524611.6
4,90022624211.6
5,00022023111.5
5,10021622211.4

Test 4: NOS with warmed bottle
RPMHPTORQUEAIR/FUEL RATIO
2,90012522614.61
3,00015727514.32
3,10022037214.0
3,20022637113.8
3,30022836313.7
3,40023335913.6
3,50023535313.5
3,60023634513.3
3,70023933913.1
3,80024033212.9
3,90024232512.7
4,00024331912.6
4,10024431212.5
4,20024530712.4
4,30024429912.4
4,40024429112.4
4,50024028012.4
4,60024327712.3
4,70024227012.2
4,80024026212.2
4,90024025712.1
5,00023524712.0
5,10022923611.8

Accell
www.mrgasket.com
Jeeps R US
www.jeepsrus.com
Banks
www.bankspower.com
Nitrous Oxide Systems
www.holley.com
The Dyno Shop
10042 Prospect Ave.
Santee
CA  92071
Unichip
www.unichip.us

Prev | 1  | 2

Jeep Commander Research
Jeep Commander Get information on specs, safety features, pricing, and equipment options for the new Jeep Commander. The Commander gets 9 mpg in the city and 13 on the highway. It has had 4 vehicle recalls, which can give you an idea about its reliability. Also check out the Jeep Compass and the Jeep Grand Cherokee.

Related Photos

1999 Jeep Wrangler Xj Under Hood Comp Cams Xtreme Kits
1999 Jeep Wrangler Xj Head Wrench Camshaft Cylinder Head Whole Set Top View

Related Articles

 
1999 Jeep Wrangler XJ - The Insane Inline Update
Wrapping up our 4.6L stroker... more
 
Mr. X's Jeep
Check out this off-roading 1999 Jeep Wrangler.... more
 
Jeep Wrangler TJ Dyno Video - A Day on the Dyno
Catch the article in this month's (June '07) Jp Magazine? Now watch the video of Red on the Dyno!... more
 
Jeep Wrangler Tire Carrier Test - Tomken
Notes, Photos, and info about the Tomken Bumper... more

More Related Content