Mark Davis
Brapmaster extraordinaire
In a quest to liberate more power and torque you need to strap my spare HX50 to the car. 
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Loltus Exige
- Thread starter andybond
- Start date
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- Tags
- car supercharger
TVS1320 supercharger FTW.In a quest to liberate more power and torque you need to strap my spare HX50 to the car.
Ill need to strenghten my gearbox first and not sure I can justify the cost but never say never ...
Operation stop the rattle and free the ponies has commenced.
I have always been a little dubious about my h111 signature exhaust backbox since I got the car for no other reason that its twin pipes and I prefer the asthetic of a single larger pipe.
Tonight I decided its time to go so it did, but not without a fight!
I couldnt help but notice a little rattle ...
www.youtube.com
Ill package this exhaust up and send it to a tame exhaust maker to template and see what we can do ..
I have always been a little dubious about my h111 signature exhaust backbox since I got the car for no other reason that its twin pipes and I prefer the asthetic of a single larger pipe.
Tonight I decided its time to go so it did, but not without a fight!
I couldnt help but notice a little rattle ...
Rattle
www.youtube.com
Ill package this exhaust up and send it to a tame exhaust maker to template and see what we can do ..
Doesnt it just? I am curious if its the last cat that shat its biscuits into the exhaust, the current spanking new one ( hopefully not! ) or something else?
I have been working with a chap to get a custom exhaust made to spec. Mark has been great with the communication and ideas.
We have now two boxes in the system and the smaller box is easily removeable via vband.
Here are some images :
This leaves a quite subtle stubby single pipe poking out which I am delighted with. The slight off centerness is down to me being 25mm out with a measurement. I swear I wasnt drinking when I measured.
I have only started the car up once for a few minutes as it was late and the tone has changed dramatically. I now have bass! The only way I can describe the previous H111 exhaust is like a surround sound system without a sub. Vocally its there but there is no drama, no rumble! Its there now.
Cannot wait to get out to "test" the system and booked into the dyno to see whats what with the fuelling. Thats on 17 FEB 22. Not chasing numbers but something was restricting me last time ...
We have now two boxes in the system and the smaller box is easily removeable via vband.
Here are some images :
This leaves a quite subtle stubby single pipe poking out which I am delighted with. The slight off centerness is down to me being 25mm out with a measurement. I swear I wasnt drinking when I measured.
I have only started the car up once for a few minutes as it was late and the tone has changed dramatically. I now have bass! The only way I can describe the previous H111 exhaust is like a surround sound system without a sub. Vocally its there but there is no drama, no rumble! Its there now.
Cannot wait to get out to "test" the system and booked into the dyno to see whats what with the fuelling. Thats on 17 FEB 22. Not chasing numbers but something was restricting me last time ...
Double OE was in the na cars only. Single on the supercharged cars.
Either way, I am with you and prefer this look.
Duncan Grier
Well-Known Member
Mark_L
Well-Known Member
Yes mate, wasn't easy without the car, it's a tight space.
suffering at the moment, got in just before 2am after driving up to fit it after work..
It’s a lotus. I’ll survive!i like a single exit, looks way better than the twin. would annoy me its not central though, quick chop chop will sort that. we need sound clips
Duncan Grier
Well-Known Member
Ikle plastic cars make all normal jobs hard.
Great work as always Mark
Great work as always Mark
as in nothing lines up on them?
Yeah! Stuff creaks. Gaps are random.
Also helps that I can’t see it when driving
I have driven 90+mi in the car since Friday night. A combination of local driving and a bit further. I must say from the muted sounds that are in the cabin it sounds 1000 times better. It 2ZZ is never going to be more than a high revving 4 banger but I quite like the sound.
Mark_L
Well-Known Member
Great, Glad your Happy!
Happy is an understatement. I want some drive bys to try and do it justice,
Well,
Part 231 of the Exige.
I am sure you wont need reminding of the previous series of posts where in reverse chronological order where I had a new shiny back box built after I found a knackered back box that caused a loss of power despite putting a komotec manifold on.
So this is the post to bring us upto date
As ever I used the super reliable, friendly and knowledgeable RSTuning.
Here are some pictures of a dirty exige ( it was clean when I left ) on the dyno
With almost no changes we made +15bhp on the last result. However lots and lots of fuel was added. Various things tweaked and a load of advance added to the map ( again! )
This yielded 282.1hp ( its all about the .1 ) and 189.2ftib or in a nutshell more than the car has ever had.
I have below the mapping dyno print.
Red is when the car was first completed to AndySpec with the chargecooler etc ( 268.5 hp )
Green is when the car was last tested after putting on a komotec manifold and baffled me how I lost power - but I know now ( 256 hp )
Pink is the latest dyno with some super smooth lines of torque and hp goodness.
One nagging thing in my mind. .45bar was observed as the boost pressure. Thats a bit lower than I had anticipated. Do I have the 2.9inch pulley that I thought I had?
Tune in soon to find out when I goto Daves[mention]seriouslylotus[/mention] and have the car serviced, tyres fitted and ask Dave nicely to measure my pulley.
Part 231 of the Exige.
I am sure you wont need reminding of the previous series of posts where in reverse chronological order where I had a new shiny back box built after I found a knackered back box that caused a loss of power despite putting a komotec manifold on.
So this is the post to bring us upto date
As ever I used the super reliable, friendly and knowledgeable RSTuning.
Here are some pictures of a dirty exige ( it was clean when I left ) on the dyno
With almost no changes we made +15bhp on the last result. However lots and lots of fuel was added. Various things tweaked and a load of advance added to the map ( again! )
This yielded 282.1hp ( its all about the .1 ) and 189.2ftib or in a nutshell more than the car has ever had.
I have below the mapping dyno print.
Red is when the car was first completed to AndySpec with the chargecooler etc ( 268.5 hp )
Green is when the car was last tested after putting on a komotec manifold and baffled me how I lost power - but I know now ( 256 hp )
Pink is the latest dyno with some super smooth lines of torque and hp goodness.
One nagging thing in my mind. .45bar was observed as the boost pressure. Thats a bit lower than I had anticipated. Do I have the 2.9inch pulley that I thought I had?
Tune in soon to find out when I goto Daves[mention]seriouslylotus[/mention] and have the car serviced, tyres fitted and ask Dave nicely to measure my pulley.
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