Saab 9-5 Aero - Hybrid Turbo and 9000 Bottom End - 350 bhp
Discussion
Visited Street Racers Rolling Road Tuning in Syston, Leicestershire this morning and had a dyno session finally!
Very impressed with the set-up there, and Gordon really knows his stuff, top bloke - http://www.streetracersgd.co.uk
Car made a disappointing 315.8 bhp, but an astonishing 527.3 NM (388.7 lb ft), so it seems that the car is not holding boost higher up in the rev range. It could possibly be that the green giant injectors (465cc) are at their limit and need replacing with Deka 630cc injectors.
Some amazing machinery in the workshop, such as an 800 bhp civic, which is aiming to be the fastest FWD car over the quarter mile, with plans for 1000 bhp, and some other Japanese exotica:
Very impressed with the set-up there, and Gordon really knows his stuff, top bloke - http://www.streetracersgd.co.uk
Car made a disappointing 315.8 bhp, but an astonishing 527.3 NM (388.7 lb ft), so it seems that the car is not holding boost higher up in the rev range. It could possibly be that the green giant injectors (465cc) are at their limit and need replacing with Deka 630cc injectors.
Some amazing machinery in the workshop, such as an 800 bhp civic, which is aiming to be the fastest FWD car over the quarter mile, with plans for 1000 bhp, and some other Japanese exotica:
Well at least you know now. So if it made 315bhp what were you hoping it made?
I've had several disappointing dyno runs in my Impreza until I sorted a few things out. The last item was moving to a front mount inter-cooler & induction kit which dramatically changed the car.
465cc injectors do sound a tad on the small side although have you modified any other element of the cars fueling?
I've had several disappointing dyno runs in my Impreza until I sorted a few things out. The last item was moving to a front mount inter-cooler & induction kit which dramatically changed the car.
465cc injectors do sound a tad on the small side although have you modified any other element of the cars fueling?
AntiLagGC8 said:
Well at least you know now. So if it made 315bhp what were you hoping it made?
I've had several disappointing dyno runs in my Impreza until I sorted a few things out. The last item was moving to a front mount inter-cooler & induction kit which dramatically changed the car.
465cc injectors do sound a tad on the small side although have you modified any other element of the cars fueling?
Was expecting at least 330 bhp.I've had several disappointing dyno runs in my Impreza until I sorted a few things out. The last item was moving to a front mount inter-cooler & induction kit which dramatically changed the car.
465cc injectors do sound a tad on the small side although have you modified any other element of the cars fueling?
It has a standard fuel pressure regulator and a walbro 255 lph fuel pump, going to get Deka 630s I think. Yeh not bad for a first run would be happy to get it to 370 bhp in the future.
I would suggest you have a boost problem there. Do you have a graph showing boost and AFR?
Boost is load related and your torque drops off massively beyond 3k rpm if it was injectors I'd imagine you'd be lucky to make the end of the run without losing a piston by it running lean.
Seems to spool quickly then loses torque quite quickly, is your turbo too small?
Something's not right.
Boost is load related and your torque drops off massively beyond 3k rpm if it was injectors I'd imagine you'd be lucky to make the end of the run without losing a piston by it running lean.
Seems to spool quickly then loses torque quite quickly, is your turbo too small?
Something's not right.
Edited by anonymous-user on Friday 6th May 18:26
wormus said:
I would suggest you have a boost problem there. Do you have a graph showing boost and AFR?
Boost is load related and your torque drops off massively beyond 3k rpm if it was injectors I'd imagine you'd be lucky to make the end of the run without losing a piston by it running lean.
Seems to spool quickly then loses torque quite quickly, is your turbo too small?
Something's not right.
I don't have such a graph, how would I get one? Would I need to be doing live mapping at the time?Boost is load related and your torque drops off massively beyond 3k rpm if it was injectors I'd imagine you'd be lucky to make the end of the run without losing a piston by it running lean.
Seems to spool quickly then loses torque quite quickly, is your turbo too small?
Something's not right.
Edited by wormus on Friday 6th May 18:26
wormus said:
They should be able to provide one of you ask them? I'd never have a dyno run done without AFR being monitored.
Ok thanks I'll give them a call tomorrow, hopefully they can load it up from then run but can't see how they could measure the boost without being plugged in to the ecu in some way. Btw your Monaro sounds brutal!HybridAero said:
wormus said:
I would suggest you have a boost problem there. Do you have a graph showing boost and AFR?
Boost is load related and your torque drops off massively beyond 3k rpm if it was injectors I'd imagine you'd be lucky to make the end of the run without losing a piston by it running lean.
Seems to spool quickly then loses torque quite quickly, is your turbo too small?
Something's not right.
I don't have such a graph, how would I get one? Would I need to be doing live mapping at the time?Boost is load related and your torque drops off massively beyond 3k rpm if it was injectors I'd imagine you'd be lucky to make the end of the run without losing a piston by it running lean.
Seems to spool quickly then loses torque quite quickly, is your turbo too small?
Something's not right.
Edited by wormus on Friday 6th May 18:26
HybridAero said:
Ok thanks I'll give them a call tomorrow, hopefully they can load it up from then run but can't see how they could measure the boost without being plugged in to the ecu in some way. Btw your Monaro sounds brutal!
Thanks. Yes, it is a bit mental. Like driving a superbike but much bigger, heavier and with worse handling! Love your Saab, I have one of my own but nowhere near as fast.
AntiLagGC8 said:
The mapper should definitely be monitoring AFR during the mapping and hopefully could share the graphs. What did the mapper think was holding your car back?
He didn't say but will ask him, I originally though the 19t was at its limit but they can produce 370 bhp and a bit more torque according to noobtune HybridAero said:
What does it run on the quarter? Done any vmax events?
What does it run on the quarter? Done any vmax events?
Never tried the 1/4 as its not my thing but did VMAX and got to the rev limiter in 5th (6 gears) by about 2/3 mile. That's 186mph. Need to sort the gearing out before it will do 200mph in the mile. From 100mph it will leave anything standing but it's sort of pointless. But I love burbling around in it with the window down so I can listen to the V8.What does it run on the quarter? Done any vmax events?
wormus said:
Never tried the 1/4 as its not my thing but did VMAX and got to the rev limiter in 5th (6 gears) by about 2/3 mile. That's 186mph. Need to sort the gearing out before it will do 200mph in the mile. From 100mph it will leave anything standing but it's sort of pointless. But I love burbling around in it with the window down so I can listen to the V8.
That's epic, is it easy to get into do a vmax event? Heard it's quite an exclusive club. Sounds monstrous, Tony who did my engine rebuild etc is an Aussie and has a supercharged 5.7 Commodore running 580 at the flywheel, that thing is beyond belief fast, back end steps out with minimal effort.wormus said:
They are fun, almost 400hp out of the box and loads of tuning potential. Could be the best way to scratch your performance itch.?
Well my plan is to go for a 4WD next then RWD, ideally an old JDM 3 door Impreza then a Monaro/Commodore, if I can afford it! Dream real-world car is an E46 M3 CSL.HybridAero said:
wormus said:
They are fun, almost 400hp out of the box and loads of tuning potential. Could be the best way to scratch your performance itch.?
Well my plan is to go for a 4WD next then RWD, ideally an old JDM 3 door Impreza then a Monaro/Commodore, if I can afford it! Dream real-world car is an E46 M3 CSL.I love my old classic, so much grip and performance everywhere but most of all, I like the rawness of it and how it behaves at high boost. I found the standard version of my car and other classics a little tame but once they are over 330-350 they become a lot more fun!
AntiLagGC8 said:
Ah joining the Impreza club!
I love my old classic, so much grip and performance everywhere but most of all, I like the rawness of it and how it behaves at high boost. I found the standard version of my car and other classics a little tame but once they are over 330-350 they become a lot more fun!
Definitely, after driving my mate's old Impreza Type-R 3 door I was astonished at the grip and brutal off-the-line acceleration. What's yours like on fuel on a cruise?I love my old classic, so much grip and performance everywhere but most of all, I like the rawness of it and how it behaves at high boost. I found the standard version of my car and other classics a little tame but once they are over 330-350 they become a lot more fun!
HybridAero said:
AntiLagGC8 said:
Ah joining the Impreza club!
I love my old classic, so much grip and performance everywhere but most of all, I like the rawness of it and how it behaves at high boost. I found the standard version of my car and other classics a little tame but once they are over 330-350 they become a lot more fun!
Definitely, after driving my mate's old Impreza Type-R 3 door I was astonished at the grip and brutal off-the-line acceleration. What's yours like on fuel on a cruise?I love my old classic, so much grip and performance everywhere but most of all, I like the rawness of it and how it behaves at high boost. I found the standard version of my car and other classics a little tame but once they are over 330-350 they become a lot more fun!
My off the line performance is slightly comical, I have anti-lag and launch control on my car as well. I'm always amazed by its ability to find traction everywhere.
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