Forge twintercooler

[Janner_Sy]

where abouts are you located? if your near AMD why not try Sanspeeds Dyno dynamics rolling road they are here only 12 miles from AMD. 

Its cheaper for a start and stock cars make stock figures on there.  plus being dyno dynamics you know that its not going to give away free Hp in doggy bags so you will have a good idea what its putting out and plenty of stage 2+ graphs from DD rollers to compare against

[Janner_Sy]

Guys, that's all very well, but it doesn't make sense that JK was on the same rollers as me just 4 weeks ago without an intercooler or HPFP and his torque is about the same as mine and he has an extra 5bhp 
I'm really concerned now 

Rollers were used on a different day and the Key thing is his has an AMD map being ran on AMDEssex's rollers.  Amd cars ALWAYS run really well at AMD.

[Jussa]

Janner, that's the major issue!!!

Mine is an AMD map as well, AMD have done every mod from the beginning for me, that's why doesn't make sense to me 

[Jussa]

By the way that Sanspeed is a lot closer to me than AMD anyway.
What do they charge for a RR? 

[PDT]

Guys, that's all very well, but it doesn't make sense that JK was on the same rollers as me just 4 weeks ago without an intercooler or HPFP and his torque is about the same as mine and he has an extra 5bhp 
I'm really concerned now 

Its all in the mapping, now that you have the cooler you should be able to make much better figures. Also its worth noting that different cars make different figures, look at stg2+ on K04 cars where some make 355ish bhp and others make 370+ with the same software and similar mods.

I would reccomend speaking with your tuner and taking it from there, I wouldnt go shopping around for different dyno results based on other peoples opinion of 'this dyno over/under reads' as you could go on a dynodynamics dyno and 'lose' 15bhp or a Dastek dyno and 'gain' 40bhp which will confuse matters even more  

Power figures are one thing a dyno outputs, but the true reason for tuners using a dyno is to develop software and upgrades and to assist in measuring various parameters under load in a safe and controlled manor i.e datalogging and steady state tuning.  

[Jk911]

Wasn't saying amd rollers are 100% ,was just trying to offer a comparison to jussa as we have the same map on the same rollers, were not measuring cocks was just trying to help find an explanation, it's not like my dad owns amd or anything like that, doesn't matter what rollers we run on something is obviously not right!

Ps let me know how you get on justin  

Ps don't go to sanspeed, I know people that have had problems with them in the past, also if you had the work done at amd I would give them a chance to sort out the problem first, if you go to another tuner then take your findings back to amd I doubt they will entertain an issues you have!

[Janner_Sy]

Janner, that's the major issue!!!

Mine is an AMD map as well, AMD have done every mod from the beginning for me, that's why doesn't make sense to me 

Ah my mistake.  THought you said revo stage 2+   Either way id still try another set of rollers just for confirmation that its either OK or something is wrong.  sanspeed were about £55 for a dyno run last time i used them,

[Janner_Sy]

Wasn't saying amd rollers are 100% ,was just trying to offer a comparison to jussa as we have the same map on the same rollers, were not measuring cocks was just trying to help find an explanation, it's not like my dad owns amd or anything like that, doesn't matter what rollers we run on something is obviously not right!

what im trying to get at is the consistency of the rollers.  Cars of equal tune make such varied figures there.  Christ earlier on this year guys with stage 2 and 2+ S3's were nearly making 350HP, yet other days they make 340hp on there.   

the mnain reason i say Dyno dynamics rollers is they are consistent with each other

[Jk911]

Janner, we understand that mate, but what doesn't make sense is stage2+ should make better power/torque than stage2 no matter what rollers or what wether, so trying another rolling road is not going to be much use as it offers no comparison!

[Janner_Sy]

but they werent done on the same day so its not a direct comparison as AMDs rollers give such varied results.

For instance 280Hp and 320lbft is bang on for a stage 2+ car.  the lower torque that he has could be down to weather, or tyre pressures etc just as PDT says.  Yours might be reading very high, and his reading accurately, if he went on some DD rollers and made comparable figures to everyone else at stage 2+ using the same dyno dynamics then he is OK, otherwise he could end up throwing cash at a non existent problem.

If he went on the other rollers and made lower figures then he'll know its an issue with the car

[PDT]

Post both the graphs, this would ge a good starting point.

Different cars on different days cant be compared that accurately, even when the dyno uses a weather station for compensations there are various other factors that come into play, a different tyre can cause more drag, as can different tyre pressures. Lets say that car A has a tyre that has a 5% bigger surface area than car B. This causes a guestimated 5% more drag under load (the more power that is put through a tyre, the higher the resistance or drag as it deforms more)

So lets add 5% to the figure of 280bhp = an extra 14bhp at the wheels, approx 17hp at the flywheel.  

I switched from 235/18 tyres to 255/18 tyres on the back of my BMW and lost 13hp, but in reality I didnt I just added resistance, so I added 10psi to stop the tyre deforming and my 13hp returned.

[Jk911]

Just for arguments sake, if jussa wants to pay for a power run for both cars I'm more than willing to go to amd with him tomorrow, I know the guys there quite well, (I was actually there today having cam belt /water pump and full service), this should give some indication of how rollers are performing, the point I was trying to make is he should take it back to them and let them see if there's a problem first, regardless of power if he's not happy it needs sorting, although I understand that similar cars with similar mods can give different readings ,are we all in agreement that stage2+ should give better results/figures than stage 2??????????,if so there has to be a problem, as I said jussa I'm more than happy to meet you at amd tomorrow if it helps mate.

[Jussa]

I woould love to meet up tomorrow mate, but I'd be getting a divorce 
I was there on Monday from 8am till 7pm and got loads grief from the missus.
I'll have a chat tomorrow with Shaun and see what he says.......maybe if you can we can meet up at AMD next week, even if it means me paying for both our RR's
If you've sent me your RR graph, I'll post both of them tomorrow late morning for PDT and Janner to have a gander at 

[Jk911]

No worries, would have to be later part of next week as I'm off to Monaco for a long weekend on Thursday, have emailed my rr, hope you get on ok.

[Jussa]

I'll post up both graphs tomorrow.
Have a good time in Monaco, will catch up with you aout AMD when u get back.