Right, i've had no luck contacting Graham so hopefully someone here can help.

I got my GTECH 1 back at the start of December and it all seems to be working great but i have a couple of questions.

I had the coop rolling roaded before and after the chip install and the after figures were not what i expected. The chip had only increased BHP by 12 but the torque went up by 30 lbft! I thought that it was meant to add around 25-30bhp but i'm not sure about the torque figures.

It may be slightly explained by the fact the the car had much higher start figures that i expected - it's an almost standard car (apart from k & N panel, drilled box and exhaust) and it was recorded at 245bhp and 231 lbft which was high i thought - the after figures were 257.9bhp and 271 lbft.

My first question is - is this normal or should i be worried? and secondly - does anyone have any info on what exactly the chip changes apart from boost level and removing the limiter from 1st and 2nd?

Sorry about the long post.

That's a lot better than normal. BHP is an equation of torque x rpms therefore a high torque figure and low bhp figure in comparison means you have more mid range grunt rather than top end i.e. the torque is dropping off quickly towards redline. This is perfectly normal on a standard car with just a chip therefore you should be very pleased with your results.

Sounds good to me too. I would expect around 255bhp with those mods. I believe Graham's chip also increases the fuelling too.

The most important thing a RR session should do is let you know whether you're fuelling OK, or too lean (bad) or too rich (not so bad)

Also, are you running the standard EBV, or have you changed that to a manual boost control valve - if so what boost you set that to?

Cheers guys - my main concern was that the starting figures were a bit high with only the minor mods - i wouldn't have expected just a k&n panel, exhaust and drilled box to give me 245bhp!

Yellafella - the RR showed the fueling to be OK (or so they said, i not that knowledgeable with the coop so i took their word for it). Also, boost seemed stable at 1.2bar with no serious overboosting as GrahamL told me to check. At the mo i'm running with the EBV although i just got a PRV arrived from Cosomograph this moring so i was going to change to that. What do you recommend? I've also got a Forge DV006 to install at some point.

I'm virtually same set up as you, with Gtech-1, and swapped the EBV for cosmo's PRV. I'm waiting for my RR session next week to check fuelling, so I've only tried the PRV @ 1.0 bar so far.

Feels a bit faster at 1.0 bar compared to the EBV although more of a solid boost. I found with the EBV the boost felt spikier and would fall away from say 1.2 to 0.7 (as the revs climb) quicker than with the PRV.

I'm having mine RR'd with cosmo's device wound in to 1.2bar which I would expect to give a slightly higher bhp figure than yours with the EBV.

Thanks Yellafella. I assume your car is being RR'd at SRR? I was on the list as going when it was set for the 30th Dec but i can't make any of the new dates!

You may be able to help me with something else then if you don't mind? How did you install the PBV? I realise i'll have to back it off to the lowest boost setting and then gradually get it higher to 1.2bar but how did you check it as you went along - did you just use your boost gauge? Also, did you use any particular process in terms of taking it to a certain RPM or anything?

Most appreciative of your help.

Cheers.

No probs. Yes my RR will be at Surrey on 14th. Shame no-one else can make this date!

Right, find the EBV, undo it from its mount (10mm socket), pull off the top vac hose and plug the hose with a screw.
Leave the electrical connector on the bottom of the EBV.
Pull off the 2 vac hoses from the bottom of the EBV and block the nipples to stop dirt ingress. The vac pipe marked RED (nearest to the elec connector I think) is the IN pipe and goes on the straight nipple of the PBV. The other vac hose (BLUE?) is the OUT pipe and goes on the angled nipple of the PBV.

Fit the EBV back onto its housing with just the electrical connector, er, connected (so the ECU still thinks it's there).

Cosmo will have sent the valve to you set at a low boost. Leave it like that (about 4mm thread still visible) and test boost with the guage. A bootful at low speed in a high gear will show the max boost.

Just undo the locking nut and wind the controller IN (to shorten the length) to increase boost, couple of turns at a time. You may find you have to wind it ALL the way in to get to 1.2 bar, which is the max the std turbo is rated for, but safest to adust couple of turns at a time.

Read the instructions cosmo sent with regards to holding the red pipe when you adjust the PBV to avoid it twisting too much.

Hope this helps

Thanks very much for that yellafella. I'll give it a go at the weekend and see how it goes. I was wondering whether to bother or not as when it was RR'd after the GTECH was installed it showed it wasn't overboosting with the EVB and was hitting 1.2bar nicely.

If you say that the boost is holding better with the PRV on yours then i think i'll give it a go.

Well worth trying it out now you've bought one. 10minute job to fit / remove. Plus you've got the option then to turn the boost right DOWN if you like, for another driver, or icy conditions etc.

Would be interesting to know the before/after boost, if you had a boost gauge fitted... I suspect the wastegate adjustment on your turbo is a bit off hence you were probably getting the extra power from higher boost than normal.

So the chip would only be giving a little extra boost + the ignition/fuelling changes would maybe only give a 12bhp increase. Overall still a pretty good result, at 257 though? Of course if you're not happy with the chip you can return it for a refund.

Graham I think he's very happy with the chip, just a bit worried about why it was pushing more power than std before the chip.

Interesting that increase of 40lb/fts torque too after fitting the chip.

Fitted my Gtech-1 recently too. Love It!

So what should the max boost be before and after fitting the GTECH 1 chip? Or does it only change boost levels in 1st and 2nd gears?

As standard you should get 1.0 bar sustained boost and with the boost limiter about 0.7 bar in 1st+2nd. With the chip it should be 1.2 bar in all gears. (In 4th+5th gear in can be slightly higher, with or without the chip).

Wow, hence the difference. Thanks Graham, I'll defo be ordering one once I've got a gauge and fitted etc.

Am I right thinking the standard fuel pump is good to 1.2 bar? Anything over this and then the uprated job is needed?

im thinking of buying a GTECH 1 chip but before i do that i have not got a gauge in my coupe What is the best boost gauge to fit to see the boost bar levals.

http://www.fiatcoupeclub.org/forum/showflat.php?Cat=0&Number=12820&an=0&page=0#Post12820

Sorry guy's, been away at the weekend so not seen the reply's. Graham, i have no problems at all with the chip except one question which i have PM'd you about.

My query was just because with only very minor mods the car was RR'd at 245bhp BEFORE the chip which i wasn't expecting at all. Then with the chip it only rose to 257bhp but the toque went up by 40lbft which again i didn't know if that was to be expected. I just wondered if maybe there was something amiss before the car was RR'd as 257bhp was what i'd expect after.

I've PM'd you about the other query.