HDi Tuning Module

maglite · Post by **maglite** » Wed Feb 28, 2007 2:47 am

Hi guys, I know this has probably been mentioned many times before, but I'm thinking about getting one of these and I was wondering if anyone else had anything simular?

According to the description it comes with a switch to turn it on and off. It's very tempting for the price.

Post by **Welly** » Wed Feb 28, 2007 9:57 am

I'd personally prefer a 'remap' by a decent mobile specialist.

These 'modules' just trick the ECU into injecting more fuel (as far as I can tell) whereas a proper remap will be a boost increase and a new fuel map to suit - much more satisfactory and normally around the £300.00 mark.

I would avoid these £75.00 - £150.00 modules.

Only my opinion like, but you get what you pay for. There's a few on here with 'remaps' hopefully they will comment on this thread too.

If I get my clutch sorted I am definately getting a remap, just not sure who to use yet but I shall do plenty of research first.

jameslxdt · Post by **jameslxdt** » Wed Feb 28, 2007 7:54 pm

i would avoid these things like the plague, they confuse the rail pressure sensor and ecu so it raises the fuel pressure by about 300 bar, yes it will gain you power, and it will smoke like a good'un, it also brings about severe premature wear of the high pressure pump and injectors, a remap is a much better idea, but in my opinion the HDi is best left as it is, if peugeot could have refined the HDi even more to get more power and torque reliably, dont you think they would have?

maglite · Post by **maglite** » Wed Feb 28, 2007 11:58 pm

jameslxdt wrote:i would avoid these things like the plague, they confuse the rail pressure sensor and ecu so it raises the fuel pressure by about 300 bar, yes it will gain you power, and it will smoke like a good'un, it also brings about severe premature wear of the high pressure pump and injectors, a remap is a much better idea, but in my opinion the HDi is best left as it is, if peugeot could have refined the HDi even more to get more power and torque reliably, dont you think they would have?

Yes, this is what was holding me back. I was thinking along these lines:

Peugeot made the 2.0 HDI 110 and the sellers of these modules are claiming an increase to approx 130bhp

When I asked the seller why Peugeot have a 2.2 HDI that gives out 136bhp, he replied and said that the company did that to make more money.

I'm gonna leave it and and put the cash towards some good quality oil and filters when she needs servicing.

Post by **Welly** » Thu Mar 01, 2007 6:55 am

There is truth in the theory that all Diesel engines can take higher boost than standard and usually respond really well to tuning. However a manufacturer won't go too over the top with boost etc as standard because they can't legislate for how the car will be looked after.

They have to assume that all the cars will be mistreated in some way and wouldn't want a lot of claims by owners that have neglected the car and the engine has failed in some way.

The combustion of Diesel is at a much lower temperature than petrol so I would not see a problem with running a bit more boost to be honest. Afterall the new HDi 110 is a 1600cc so imagine what sort of boost that is running, and I don't see that it's any different internaly than our 2000cc.

I would definately stay away from the cheap ECU trickery ones though.

jameslxdt · Post by **jameslxdt** » Thu Mar 01, 2007 6:59 pm

Welton wrote: The combustion of Diesel is at a much lower temperature than petrol so I would not see a problem with running a bit more boost to be honest. Afterall the new HDi 110 is a 1600cc so imagine what sort of boost that is running, and I don't see that it's any different internaly than our 2000cc.

I would definately stay away from the cheap ECU trickery ones though.

the 1600cc HDi 110 in the 307 is bloody amazing, my dad pinched one for me to have a go in, the power is unreal, it starts at 1200rpm and pulls all the way too 4700rpm, you can be in 4th gear at 25mph and floor it and it does not hang arround, you hear the turbo spool then woooosh you glance at the speedo and your at 70mph

the only downside is they have to be run on fully sythentic engine oil, and if they dont well they go pop, very quickly

turbolag · Post by **turbolag** » Fri Mar 02, 2007 6:51 pm

jameslxdt wrote:and it will smoke like a good'un, it also brings about severe premature wear of the high pressure pump and injectors

The high pressure pump and injectors are up to it, nae worry, though the lift pumps can sometimes die from running 10 to the dozen trying to keep the supply going, but these die with £100k mile regularity on an unmodified car, so not much to loose there.

They'll only smoke if you turn up the 'volume' too much. I had a Dragon (which packed up, so went back), which was replaced by a Vector (which was cheaper - £170 delivered at the time, on offer) and neither smoked and both gave MOT smoke test results on a par with the previous un modded figure.

A remap is undoubtedly the better performer, but has disadvantages in other ways (cost, needs to be a 'live' remap to be truly effective, which costs yet more, can't be swapped between cars etc), so it depends on what you want.

A remap was originally on my shopping list, but I went for the 'box. 2 years later and i'm laughing cos a £35 loom means it'll slip under the bonnet of my new 407 with little fuss. huzzah!

If you do 'box it, just avoid the cheap ones and stick to the known names where you can find a few satisfied owners for a review.

Good luck.

turbolag · Post by **turbolag** » Fri Mar 02, 2007 6:55 pm

Welton wrote:Afterall the new HDi 110 is a 1600cc so imagine what sort of boost that is running, and I don't see that it's any different internaly than our 2000cc.

The big fifference is that the box on the 110 won't take much more power, and needs attention before tuning should be considered.

HDiAndy · Post by **HDiAndy** » Sat Mar 03, 2007 11:32 am

I've had mine remapped in the last week, more than pleased with the results. It's not transformed the car into a Ferrari but the torque difference is noticeable round town and the acceleration has improved dramatically. I reset the trip computer for the journey home and it still returned 47mpg over 45 miles

Post by **Welly** » Sat Mar 03, 2007 1:29 pm

turbolag wrote:
Welton wrote:Afterall the new HDi 110 is a 1600cc so imagine what sort of boost that is running, and I don't see that it's any different internaly than our 2000cc.
The big difference is that the box on the 110 won't take much more power, and needs attention before tuning should be considered.

Turboey....are you saying the 110's gearbox cannot take any extra Horses?????

And I corrected your spelling mistake for you

turbolag · Post by **turbolag** » Sat Mar 03, 2007 9:01 pm

I may be at cross purposes. The 1.6 110 HDi won't take much more, but the BE series box on the 406 110 should take a fair dollop. The BE4(5) on the 90 is up to it, despite rumours to the contrary - it manages 155bhp in the phII Mi16 with no problem.

jameslxdt · Post by **jameslxdt** » Sat Mar 03, 2007 9:52 pm

all the BE 'boxes are quite strong, the ML5t and the MA 'boxes are the ones that cant take anymore power, the MA5 are quite prone to stripping gears for no apparent reason

turbolag · Post by **turbolag** » Sat Mar 03, 2007 11:04 pm

Hey, sweet avatar James!

jameslxdt · Post by **jameslxdt** » Sat Mar 03, 2007 11:12 pm

thanks, im supprised you havent noticed ive had it a while, though it would be appropriate for me to donate it to you