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Dinan S1

The Dinan S1 programs take engine performance a notch higher by incorporating further enhancements to the intake system, along with fully matched engine management software.
The engine compartment takes on a clean, purposeful look with Dinan’s aggressive Cold Air Intake System installed in place of the restrictive stock air box. The Cold Air Intake features a large insulated enclosure designed to scoop up plenty of cold, dense air for maximum power gains. The S1-X5 offers greater horsepower gains for faster acceleration, while maintaining
BMW-like driveability.

Dinan S1 program features

• Stage 3A Performance Engine Software
• High Flow Throttle Body
• High Flow Cold Air Intake System
• Free Flow Exhaust
• Front Strut Tower Brace
• Performance Automatic Transmission Software
• Signature Series Floor Mats
• Dinan Deck Lid Badge
• Serial Numbered Dinan S1 Plaque.

Peak Horsepower ..............................310 bhp @ 5700 rpm up from 282 @ 5400 rpm
Peak Torcue .....................................351 lb/ft @ 3500 rpm up from 324 lb-ft @ 3600 rpm

bam! Total: $4743.00 which leaves $257 to buy green tree air fresheners, a gold fist for the dash, and a set of those ill-fitting generic mats with bugs bunny stitched in! :lol:

4,555 Posts
BoeserBlick said:
Here's the challenge...

2001 BMW X5 4.4L
$5000 in cash

What would you do? No cosmetic shit. Performance only.

Be as specific as possible. Brands, cots, etc.
Go with the Dinan Stage-1 kit.. I can't wait to see it!! My neighbor is a Dinan Reseller and installer, so he may be able to beat the listed cost of $4700US. I saw a Stage-3 in Woodbridge, VA over the summer and it was sick. Brembo brakes all the way around and a nice intercooled Supercharger.

4,011 Posts
Analize this 8)
Courtesy of ESStuning -with love :
The VT series X5 4.4 system is based upon the world renown Vortech V2SQ main supercharger unit which gives exceptional power gains and unmatched durability along with civilized everyday driveability. The system maintains all OBD-II functions and is 49 State Emissions Legal. It is backed by a comprehensive 2 year, unlimited mileage warranty. The system installs in 16-18 hours using normal hand tools and no irreversible modifications to the car is necessary.

404HP (7PSI)
CNC aluminum crank pulley.
Fully automatic belt tensioning system.
8 larger Bosch injectors.
New ESS ECU software 150MPH (240km/h) top speed governor and 6650RPM limit.
New Bosch Mass AirFlow sensor for higher air flow.
Vortech V2SQ (Super Quiet) Supercharger unit
Supercharger oil pressure system for oil supply to the supercharger unit (100% bolt-on)
Supercharger oil return system (100% bolt-on, no oil pan modifications required)
ESS Air-Assist? pressurized oil return system.
CNC machined, hard anodized 20mm certal-aluminum main bracket for extreme rigidity.
ESS bumper mounted CAI w/K&N high flow air filter.
Casted intake assembly with ultra strength silicone sleeve connections and stainless steel hose clamps.
Mandrel bent discharge assembly made from 304 quality stainless steel and finished in black powder coat.
Detailed step-by-step installation instructions, fully illustrated.
Heavy Duty drive belt system.
Oil breather assembly designed for boost.
CNC machined, anodized fan spacer.
2yr./unlimited mileage warranty.
100% Maintenance free operation.
100% Bolt-on installation.
Part number: 108-42x
Boost pressure: 7 PSI
Horsepower: 404 DIN (Stock 282/286)
Torque: 589 NM (Stock 440)
0 - 60: Aut : 5,6 sec
Installation time : 16-18 hours

Price complete bolt-on kit : USD 7995.00

6,874 Posts
Discussion Starter #9
That ESS Tunig SC looks interesting & for not that much $$$ (relatively speaking).... it may be an option. We knew off the bat that the Dinan S3 SC was going to be well over $15K. That ESS set-up is out of the $5K budget... but also much cheaper than we were expecting. This may be a real possiblity. More research to be done. I think at the very least we will go with the S1 set up. But this ESS thing intrigues me.

2,961 Posts
You might want to take this into consideration though, if done at a DINAN certified dealership, the car will still maintain the BMW warranty as well. Being an advocate for keeping the warranty for as long as possible, I'd opt for the DINAN route to keep everything copacetic.

3,341 Posts
- Upsolute chip $350
- Dinan CAI $699
- Pair of Magnaflow mufflers $200
- Upgraded brake pads on OEM rotors $300
- tires/suspension $2000

- not riding the dinan bandwagon: PRICELESS! :poke:
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