As above really, what have you done to get over 300 bhp and whats your actual bhp and torque figures?

Looking into a Small turbo at the moment.

Cheers, Rich.

 

max is 300 on a small turbo mate i'm running 298bhp 320lb.ft that was b4 my cooler upgrades could be more now

you need a uprated fuel pump and regulator, exhaust, good chip and filter... thats stg1-2 on a small turbo any higher and you need different management and that

 

err 300 bhp on the small turbo, its a hard one to do mate as most only reach about 270 bhp max

 

303bhp & 294lbft.
Before the cams it was 287bhp & 302lbft.

Std fuel pump, but running permenant live.
Big induction cone
Fast road cams (bd10.5!!)sort of
De-catted magnex
T28 nissan sunny GTi-R turbo
Chip.
Std intercooler
Std rad
EEC4
Std injectors
Std head gasket
90,000+ miles

 

was gonna say where's cossymad. his small turbo is a quicker as stage 3 big turbo running 330bhp.

 

dunno really i got a graph here for 298bhp and 320 lb.ft

mine only has the mods i said

 

Might have to look into a set of these cams then...what make are yours?

 

Ive been told by a few people that 300 bhp is the max really. Anything beyond that and your talking big money. Im currently looking at a small turbo that has a graph to prove 324 bhp at GGR. I know it has an uprated turbo and water injection but not sure on what else its had to be honest. All the works been done by graham goode.

Is it that its not possible to get over 300 bhp or just that its not 'safe' to run over 300 bhp?

What else must have been done to the car im looking at to get 324 bhp? What should I look out for in the service history and reciepts?

Thanks, Rich.

 

the small turbo runs out of injector at around the 300bhp mark, we done a conversion on one recently, the guy didn't want big turbo managment as he thought this was going backwards, so we fitted an Omex managment system, he ratained the small turbo untill he has the funds to uprate this aswell, the car running dark green injectors & around 20psi made 308 bhp, but the boost was dropping off due to the small turbo, but now he has the managment fitted he can go for whatever turbo & injector he wants, he will just need a remap to suit.
the cost of the managment supplied, fitted & mapped was about £2200 with the injectors, map sensoe etc, but when you concider the price of all the parts you would need for marelli managment, plus fitting & mapping, its not that bad.

 

So do you think that the car im looking at, would have had to had an engine managemnt change? The only thing that worries me is that its running to its limits, although it does have an uprated turbo.

 

Cossymad is called that for a reason





BTW: Chris - could you check me price on helper springs for AVO's?

 

i think you need to know exactly whats on or done to this car b4 u buy mine as said has the power i quoted i dont suppose i will get any higher i also have a T28 hybrid on but as said 300 really is the maximum b4 the injectors can give any more ..... i have autronic management myself and whne the time comes i shall have that fitted but for now my power is fine maybe this time nxt yr i may consider getting it fitted then i am unlimited as has been said with what you can do

 

IMO more than 300bhp is possible on standard management, it's just a matter of changing the injectors, MAF and MAP sensor and letting the ecu know about the modifications. This is where the difficulty lies for most tuners as they don't know where the calibration data is for these items. The spark and fuel tables then need mapping for the extended ranges. The only real limitation of the eec-iv is actually that it is limited to calculations involving a maximum of 200% load and whilst there are ways around this it all takes time and effort to rescale the tables to compensate.

You shouldn't push standard injectors past about 270 bhp, one way around this is to up the fuel pressure as per Adamski's car. The standard fuel pump is marginal for a standard car too (I think GGR state it's from and XR3i!).

Cossymad, who's chip do you run and have you changed the regulator?

 

collins chip to my spec (no rev or boost limiter)
std FPR

 

Gulp Have you had the AF ratio checked under load?

 

Yep its fine if anything it runs a tad rich, and I get big fat flameouts through the exhaust.
God I love optimax + octane boost!!