Which mod is next
Discussion
After doing my first rolling road session this weekend and with a respectable ? result of 262 bhp 302 lbft on a stardand car ex the ACT kit air filter the is question what next. I've looked through the forum and seen what a lot of you guy's have done, and obviuosly I 'd love to hand her into the garage and say all of that please, but due to finance it is going to be in a number of stages.
So the question guy's is what next and which order should it be done. I don't want to do a remap only to find fitting a throttle next means another remap ect. I know at sum stage a little repetition is required but if it could be avoided then great.
I was thinking either Chip programme upgrade and inlarged Plenum (72mm DIY if possible?)next. but this might not be the best order ?
Advice please gents.
Current car status
97 500
Act induction kit
New dizzy and cap
New Racing HT leads
So the question guy's is what next and which order should it be done. I don't want to do a remap only to find fitting a throttle next means another remap ect. I know at sum stage a little repetition is required but if it could be avoided then great.
I was thinking either Chip programme upgrade and inlarged Plenum (72mm DIY if possible?)next. but this might not be the best order ?
Advice please gents.
Current car status
97 500
Act induction kit
New dizzy and cap
New Racing HT leads
If you plan to do a series of mods over a period of time then a different ecu,peferably with the ability for wasted spark ignition,would be my first mod.From this point onwards you will have better performance,economy and much cheaper mapping each time you need it.Having done this,you will be able to remove the horribly restrictive AFM,and improve the induction for free
,from then onwards the world is your lobster
,from then onwards the world is your lobsteradyw said:
What ECU would you surgest?, I was thinking of just a straight re programmed chip from a local company ( where I had the rollng road test they seem to know what they were doing everywhere elce is a long way to travel), but as you say that might not be the best
There are many different types of ecu that would do the job,the main thing is to get one which has the feature you will need,and is an easy ecu to map.I run an Omex 710 on mine,but the Emerald system looks about the best value/performance out there imho.You can easily buy a re-mapped chip for your car,but do you realise how much they cost and how much more it will cost to be altered each time.An off the shelf chip will also not be quite as good as having it mapped on a rolling road,oh,and you still wont have the ability to map the ignition with this expense.
These are the very reasons i would personally suggest you start with the ecu,it will pay big dividends in the long run
Advw
The question you need to answer first is 'Do you care about originality or not?
If you do then you may want to retain the basic layout, i.e. AFM, alloy plenum, standard distributor. Lucas 14CUX ECU, etc. BUT develope these components to give of their best and eliminate as far as possible the weak links. You can open out the AFM, plenum throttle, trumpets and inlet tracts to give the best induction with the standard items retained but modified. You can slightly up the fuel pressure, fit bigger injectors and have your ECU chipped to suit. You can fir big valve heads and an improved camshaft as well.
If you don't mind loosing the basic under-bonnet appearance of the RV8 engined TVR then AJP is right start with a completely different ECU and build from there - your possibilities are endless depending on your pockets. Or you can throw the RV8 out all together and fit an AJP8. Or you can supercharge the engine.
AsI said at the start first you must decide if you're an originality freak who wants the best the original layout can provide or a power junkie always looking for your next fix.
It can be a slippery slope which ever way you go - so be warned!
Rob
The question you need to answer first is 'Do you care about originality or not?
If you do then you may want to retain the basic layout, i.e. AFM, alloy plenum, standard distributor. Lucas 14CUX ECU, etc. BUT develope these components to give of their best and eliminate as far as possible the weak links. You can open out the AFM, plenum throttle, trumpets and inlet tracts to give the best induction with the standard items retained but modified. You can slightly up the fuel pressure, fit bigger injectors and have your ECU chipped to suit. You can fir big valve heads and an improved camshaft as well.
If you don't mind loosing the basic under-bonnet appearance of the RV8 engined TVR then AJP is right start with a completely different ECU and build from there - your possibilities are endless depending on your pockets. Or you can throw the RV8 out all together and fit an AJP8. Or you can supercharge the engine.
AsI said at the start first you must decide if you're an originality freak who wants the best the original layout can provide or a power junkie always looking for your next fix.
It can be a slippery slope which ever way you go - so be warned!
Rob
How much money have you got to spend?
If you have about a grand then a cam change works well and if you fit an uprated fuel regulator you might get away without a remap aswell.
if you have 2 grand then go for an aftermarket ecu and mapping on top.
Once you're heading the north side of 300hp though you are well advised to listen to AJPGriff, by far the best value for money was from getting rid of the limiting Lucas stuff and getting the omex on his car (fitted in his case by V8Developments), the remapping is litrally 50-100 pounds for any other mods, you wont get that value from your lucas and you'll be hp limited whilstever you keep your air flow meter. You can get good aftermarket ECUs now for about 500 pounds.
If you have about a grand then a cam change works well and if you fit an uprated fuel regulator you might get away without a remap aswell.
if you have 2 grand then go for an aftermarket ecu and mapping on top.
Once you're heading the north side of 300hp though you are well advised to listen to AJPGriff, by far the best value for money was from getting rid of the limiting Lucas stuff and getting the omex on his car (fitted in his case by V8Developments), the remapping is litrally 50-100 pounds for any other mods, you wont get that value from your lucas and you'll be hp limited whilstever you keep your air flow meter. You can get good aftermarket ECUs now for about 500 pounds.
Like Mike & Julian, I favour the aftermarket ECU approach. (I think I have the second cheapest solution going with my VEMS setup. Possible to be complete well within a £500 budget.)
I found it wasn't a question of how much money I had to spend, but how long it takes to spend it and what order things were done to minimise the times would I need to do the same thing to get all the benefits.
If you change the cam, then chances are a remap will be needed to make the best of it. The same goes for induction upgrades etc. OK, the car won't die from not having the optimal state of tune, but it seems silly to not get the best (or indeed anything at all!) from the expensive parts you just bought. So I did the ECU first, followed by induction, injectors and then the cam. At each stage I could easily adjust the map to get the best out of what I had done (mostly mapped myself, but sometimes I got one of the VEMS developers involved when I needed a 2nd opinion).
I hope that Julian will be having a look in the very near future once the car is back together again... We have a long overdue rolling road session from the Growl to do...
In short, a £500 ECU will most likely have paid for itself once you have done 2 other major mods, and it's worth a decent amount of extra performance in its own right.
I found it wasn't a question of how much money I had to spend, but how long it takes to spend it and what order things were done to minimise the times would I need to do the same thing to get all the benefits.
If you change the cam, then chances are a remap will be needed to make the best of it. The same goes for induction upgrades etc. OK, the car won't die from not having the optimal state of tune, but it seems silly to not get the best (or indeed anything at all!) from the expensive parts you just bought. So I did the ECU first, followed by induction, injectors and then the cam. At each stage I could easily adjust the map to get the best out of what I had done (mostly mapped myself, but sometimes I got one of the VEMS developers involved when I needed a 2nd opinion).
I hope that Julian will be having a look in the very near future once the car is back together again...
We have a long overdue rolling road session from the Growl to do... In short, a £500 ECU will most likely have paid for itself once you have done 2 other major mods, and it's worth a decent amount of extra performance in its own right.
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