Name of company: AHM
Your car and engine: 2008 159 1.9 JTDM Ti
Work done: DPF removal, EGR blank, remap, oil and filter change
Price paid: £805
Gains: Complete removal of asthmatic car frustration. Joking aside, AHM estimate BHP to now be around 200
Overall experience: I'll quote from the original thread I made when I had it done - http://www.alfaowner.com/Forum/alfa-...ed-by-ahm.html
I had my 159 Ti over at AHM on Friday, and thought I'd share the experience with everyone here just as a few others have done already.
I dropped it over on Friday morning at 9 am, and met Aidie who took all the details and checked the work to be done. I also asked him if he'd change the ol and filer while it was on the ramps and had the under tray off (I've only had the car a few weeks and thought it worthwhile as I'd heard that it isn't always changed on a dealer service).
4 hours later and it was all done. EGR bypassed, DPF removed and remap applied. The under tray fixings at the rear had worked loose and so AHM replaced all them too. I took the DPF away at their suggestion - I suppose it can always be put back on in the future for whatever reason (selling on maybe) and AHM said they cost about £1,500 to replace.
First impressions? Wow, a massive, massive difference. Firstly it sounds a little different. A little smoother, but with more of a rumble below 2,000 rpm. The smoothness could well be the oil change or merely a placebo effect.
The performance however is day from night. AHM reckon that on an engine of my age (2008, 43,000 miles) it should now be around 200 to 208 bhp. It certainly feels like it. The BMW 325 it replaced put out 217 bhp and it feels a lot closer, although the power delivery on a turbo diesel is of course very different.
There's more power available lower down now, below 2,000 rpm, and the turbo seems to spool from lower too. It sounds a little more audible too with it's whistling. From 2,000 rpm the power really delivers at quite a rate now and runs smoothly up to 4,000 rpm where it falls away. This has advantages and disadvantages, mainly due to the gearing and also due to the characteristics of a modern turbo diesel. In first and second gear, the power and torque feels almost too much - there's a rush of power and then you're reaching for the gearstick as you run out of revs too quickly. Where the improved power really comes into it's own is third gear and above. The in gear acceleration is far more usable now, and sixth gear can be held at speeds down to as low as 50 mph without really needing to change down.
Like others I've noticed that the car computer mpg is suddenly much improved. I'm was halfway through a tank, averaging 33 mpg and a a quarter of a tank later I'm already up to just over 40 mpg on just mixed driving. I'll need to run a full tank through to really judge, but I've now covered 440 miles on this tank with just over a quarter remaining. 600 miles on one fill up certainly now looks to be within easy reach.
The total cost was just over £800 - £720 is the base work and the remainder was for the oil change and fixing the under tray. If I was doing it for economy reasons alone, I wouldn't have bothered. There always seems to be someone on an Internet forum who could gleefully tell me that I'll have to fill it up 68 times or something to break even. However, for the change in driving dynamics alone it is worthwhile, and an investment I was happy to make. It transforms the 159 into the driving experience it probably should have had from the outset.
A final word on AHM - great, professional outfit. There were some lovely classic Alfas there (not to mention a decent Ferrari!) and they seem to really know their stuff and are very helpful. Well worth the 2 1/2 hour drive from Ipswich.
UPDATE SEVERAL MONTHS LATER
No issues have developed - all still great. I'm now on 49,000 miles so I'm 6,000 miles in now.
I did a long run a few weeks ago down to Bath and back and then down to Brighton and back, and cracked the 700 miles on one tank
If I hadn't have had this done I would have sold the car some time ago.