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Yes mines at 2 bar,was thinking of e85,but for once im really happy at where its at. Next step i want is the big alcon brake set up.
Its really hard to imagine 1500 - 2000hp
With e85 everything just starts sooner, more chaos sooner on. Also seems smoother to me no fuel smell but really it’s more for track methinks.
 

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I went from a 4.5 740 hp to a 1000/780 and the difference is night and day. I for one dont seem to be able to get used to that power,infact its mainly run at 1.6 bar which is lovely on the road. I love the car though gives me a real buzz and hopefully try for some events this year.
At 1.6 bar how does it compare to your old 4.5?
 

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Well I cant compare because at 4.33 (i didnt have the hybrid turbo's done). Just everything before you start changing turbo's etc.
 

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Well I cant compare because at 4.33 (i didnt have the hybrid turbo's done). Just everything before you start changing turbo's etc.
I am at 4.25 with an Alpha upgraded intercooler right now and for the life of me, I can't decide on whether to go down the 1000hp route or use that money to jump ships and go down the 720s route. Must change my mind every other day.
 

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I was thinking about a standard Porsche turbo s or go for an ultra build GTR (ceramic brakes, gearbox, engine build, suspension that can raise from ground as well, etc, etc). I went with the GTR and here is why?

I hired a Porsche Turbo S 911 991.2. The latest equivalent is c£170k+ Which I just cannot justify/afford! At least the other one (at £125k was close to but still more than a fully built gtr).

I did not find it as good as the gtr, i felt the gtr (MY17+) interior was better, more comfortable and performance better. I thought the porsches handling and balance ‘was’ better but the upgrades I have completely blows it out the water.

Next, I do a lot of work for the likes of the energy sector and due to government announcements hybrid and electric is the way to go. Will also mean less reliance on ’specialist’ tuners as a lot will be software, AI and electronics driven (my domain).

so decided to have one last hurrah at an ultimate (within reason) petrol car that can be used for track, strip and day (if I want) and is relatively practical. For me only the Porsche offered all these but the cost point (even without modifying) is too high (for me any way).

Having done the 1000+ bhp and 850+ torque (it’ also has e85) and with some tweaks (no turbo change, or gears, etc as all done) is built to go to maybe 1400bhp. I don’t regret it. I’m literally still every weekend going out and tweaking slightly to get the grip and traction even better. Spec’d to the limits of traction on MP4S for daily and the track tyres for track.

long response but hope it helps you before you pull the trigger. Porsche, mclaren and Ferrari definitely more brand worthy cars but for all round petrol car I don’t believe you can beat the GTR and I’ve driven a few exotics (hire them for a day or 2, yes will cost you many hundreds per hire but could save you tens of thousands).
 

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Reano
Thanks very much for taking the time to write this, I appreciate it and it's very much what I am thinking. That's a good call regarding the hiring, I think I might do that to get a better feel for any alternatives.

PaulcbaGtr
Ah wicked thanks mate, I will check it out... I like Calvin he's seems like a nice guy.
 

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Yeah i traded my grey Gtr against the 1000hp white one he had for sale. For the money i was intending to spend on a forged bottom end and gearbox work to get over 800hp,it was cheaper to part exchange in
 

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I'm torn a little between Stage 2 I'm currently on and going to Stage 4.25.

What is actually the quarter mile you should be getting on 4.25? I'm sure I have heard of sub 11 second times but I watched a YouTube yesterday of Calvin's Car diary where he was at Santa Pod with his RS6 and another GTR 4.25 only managed 11.5 which to me seems slower than stock almost?
 

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I'm torn a little between Stage 2 I'm currently on and going to Stage 4.25.

What is actually the quarter mile you should be getting on 4.25? I'm sure I have heard of sub 11 second times but I watched a YouTube yesterday of Calvin's Car diary where he was at Santa Pod with his RS6 and another GTR 4.25 only managed 11.5 which to me seems slower than stock almost?
You cant really go on one car as an example,maybe he had a bad launch,all differenty varients to consider,but as an average a 4.25 car will be around 10.8. A 4.25 car is way quicker than stock mate
 

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You cant really go on one car as an example,maybe he had a bad launch,all differenty varients to consider,but as an average a 4.25 car will be around 10.8. A 4.25 car is way quicker than stock mate
Agree but in the video Calvin said his previous GTR 4.25 only ran 11.5 as well so that's pretty poor I thought. I can only imagine these 2 GTRs didn't launch that well. I know there is no improvement to 0-60 times with 4.25 than stock due to already aggressive gearing but you expect a lot better performance from 4th gear onwards.
 

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It is strange some of the times quoted. A stage 4.25 is about 1 second quicker to 100 than a stock car so you would think that if a stock car does the quarter mile in, say, 11.5 to 11.8 seconds then you would expect the 4.25 to be lower than 10.5 to 10.8. But some seem to be particularly slow. Looking back through the times posted by stage 4's and 4.25's from 5+ years ago you would think the latest "improved" tunes are slower.....
 

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Looking back I would stick at stage 2 because for me the extra noise, drone and performance were negatives compared to standard --> stage 2. The next huge jump is very very expensive and that's beyond the stage 5 level :-( when you are now at the limit of grip of your tyres so you know 'thats it' to me the big big numbers (way beyond 1000 bhp) are only for the strip with fat tyres, stripped car, etc as I cant see on track or road what much difference it would make.
 

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Looking back I would stick at stage 2 because for me the extra noise, drone and performance were negatives compared to standard --> stage 2. The next huge jump is very very expensive and that's beyond the stage 5 level :-( when you are now at the limit of grip of your tyres so you know 'thats it' to me the big big numbers (way beyond 1000 bhp) are only for the strip with fat tyres, stripped car, etc as I cant see on track or road what much difference it would make.
I would like a bit more power so maybe Stage 4 would be better?

My current Stage 2 dyno'd at Litchfield made 620HP and 555 ft/lb of torque, would be happy with around 670HP and 600 ft/lb with next tune.

Positives of Stage 4 would be to keep primary CAT so less drone, no black soot/fuel smell and car is MOT legal.

Was the drone that bad for 4.25? I don't really do much motorway miles but obviously don't want it if I can help. I've got a draggy but haven't had a chance to use it yet so may record some times sometime so I can compare.
 

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I’m watching the Litchfield development of their latest cats for high power cars as I do think there will be more clamping down on decat cars

I would like a bit more power so maybe Stage 4 would be better?

My current Stage 2 dyno'd at Litchfield made 620HP and 555 ft/lb of torque, would be happy with around 670HP and 600 ft/lb with next tune.

Positives of Stage 4 would be to keep primary CAT so less drone, no black soot/fuel smell and car is MOT legal.

Was the drone that bad for 4.25? I don't really do much motorway miles but obviously don't want it if I can help. I've got a draggy but haven't had a chance to use it yet so may record some times sometime so I can compare.
sounds reasonable the added torque will help also. I’m going to go with Racecal Romain (Syvecs, Toucan screen) to control traction, launch, etc.

Horses for courses, some love the sound with the down pipes. I do when it’s on song but not the neighbours unfriendliness. No neighbours have complaint to be fair.
 

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I'd be surprised if you got 670hp with only stage 4. From what I've seen you'd need 4.25 and possibly a better intercooler to get that horsepower.

Litchfield used to sell sports cats but not sure if that's still the case. Didn't have any about 9 months ago when I enquired. Will be interesting to see what they are now developing re.cats.
 
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