free hit
counters
Cold air intake - Page 5 - Engine & Ancilliaries/Gearbox - The Lotus Forums #ForTheOwners Jump to content


Recommended Posts

So tonight I decided to install the Radium. Took me about 1.5 hours (I really need smaller hands for these jobs :) ).

Unfortunately my car is blocked in at the moment due to DIY work and its to late to give it any mega revs so I cant say if its any good yet :).

I need to finish off the install another night as I couldnt find my stanley knife to shorten the PCV hose, and I also want to add some more cable ties for the solenoid mounting.

Good news is no EMS lighting, woot. Hopefully at the weekend I will be able to get the car out and see what its like. Boy do I hope its good.

On a negative I think my car cover has lightly scratched my car :( So that going in the bin and I will have to get the polish out when I get a chance. GGGrrrrrr

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

Upgrade today to remove Google ads and support TLF.
  • Replies 339
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Lotus run the car rich for a reason. It doesn't run too rich. It is to add cooling at the flame front. Whether its the best way to cool is a moot point, but that is what it does. Overheating of the he

A stock V6S runs at WOT at redline an AFR of 10:1 on stock tune. A V6S with CAI, Larini headers, NO CATS, OEM backbox runs at WOT an AFR of 10.5:1 on stock tune.   Still seems pretty ri

Spent another day testing the intake at the track during the Lotus cup usa HPDE, zero issues with the intake, no CEL, no idle issues and the car felt fast again compared to the stock intake. I w

Posted Images

1.5 hours - well done! So it runs and idles ok. I guess you must truly be blocked in if you can bear to wait till the weekend! Without load it's quiet so you won't notice much, even at high revs; I think you will notice once you try mid-power mid-revs though! You'll forget needing a touch of polish!

Link to post
Share on other sites

Yup idles ok, and a quick blip of the throttle I could hear some induction noise so thats promising.

100% blocked in by a skip :) So until thats gone no testing.

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

So I managed to get the car out this evening and went for a 30 min drive.

Wowzers. I mean, its a total transformation.

Throttle response has increased and when you give it the beans its awesome as you near the limiter it properly growls.

Best thing is when you drive normally its un-intrusive.

Deffo glad I did this upgrade. I want to check everything over, make sure everything is still secure, no rubbing etc, but its to dark now. Maybe next week I will do another couple of videos.

Now back to suffering man flu!

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

Dale, repeating essence of my post on the "Holy ******" thread - but the CAI is worth two! - I'm delighted you restate what I found: "total transformation" and unintrusive when you want it to be. Good not to be a lone UK voice any more!

Afraid it didn't cure my 'flu, but driving made me completely forget about having it!

Link to post
Share on other sites

Hang on, Full Forum Members are about to get a nice discount on these courtesy of Radium :thumbup:

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

Link to post
Share on other sites

Nooooo price you pay for early adoption :( Would have been nice to save some $ to balance the duty :D

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

The discount is more than the cost of FFM, plus you get a tonne of other discounts too. What's not to like! :)

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

Link to post
Share on other sites

We're only basic members anyways Dale :)

Yeah but I might have been tempted with full membership if it made sense :D

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

Link to post
Share on other sites

The Radium CAI is an absolute win; yes. There is one point, which points negative: driving high speed for longtime (German Highway in the night) turns to a very loud event. The magic RPM is 3000 or max 3500. Then it gets really loud. I drove to Düsseldorf and back... but if you drive more than 170 km/h longtime ... it is not "the fine thing." But it was not built for that and as there are speedlimits everywhere, this negative point is just an addendum.

Link to post
Share on other sites

Semi off topic, but seeing as you mention high speed. It may just be that I still havent had the chance to do many miles and connect with the car, but I find the car feels to light to push on, kinda seems disconnected in a way.

Time will tell, it just doesnt inspire confidence when your pushing on.

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

On the way back from Frankfurt last year I spent the best part of half an hour at no slower than 140, peaked at 157gps, see avatar.

At that speed the car was very confidence inspiring, even taking decent motorway corners over dodgy surfaces was no big deal :)

88 Esprit NA, 89 Esprit Turbo SE, Evora, Evora S, Evora IPS, Evora S IPS, Evora S IPS SR, Evora 400, Elise S1, Elise S1 111s, Evora GT410 Sport

Evora NA

For forum issues, please contact the Moderators. I will aim to respond to emails/PM's Mon-Fri 9-6 GMT. 

Link to post
Share on other sites

Semi off topic, but seeing as you mention high speed. It may just be that I still havent had the chance to do many miles and connect with the car, but I find the car feels to light to push on, kinda seems disconnected in a way.

Time will tell, it just doesnt inspire confidence when your pushing on.

I initially alsohad that feeling when I got the car. It turned out the front alignment wasn't quite correct. After the mechanic spent a good hour and did 3 test runs everything was perfect and I haven't had that feeling since.

The Evora is very sensible in toe and it makes sense to adjust it very precisely if you spend a lot of time on the Autobahn, as I do.

If you have the choice between a Stairway to Heaven and a Highway to Hell don't forget the Nomex®!

Captain,  Lotus Airways. We fly lower! 

Link to post
Share on other sites

Thanks for the feedback.

The tracking / geo was all done prior to me collecting the car.

I will see how it goes, it may be me and not the car. Need to rack some more miles up to suss it out.

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites

I have never felt that other than on the winter tyres. They seem to tramline and wander a lot more IMO. Are you on them? From day 1 I always felt I could lean on it on the standard UK tyres. In fact on the way home from garagewhen new I did my favourite roads (i.e. 'test track') near home and felt I was going through corners in it faster than my previous Porker that I'd had for 5 years. It is for me the best overall part of the car.

A LEGS man and proud to declare it! Lotus Enthusiasts Group Scotland

Autocar's Best UK Drivers Car 2009. Car's Performance Car of the Year 2009; Evo's Car of the Year 2009. Top Gear Sports Car of the Year 2009

Link to post
Share on other sites

Hi Dale, done about 700 miles in mine now, and I would say its the most confidence inspiring car I have driven. It corners flatter than my 111R (with Exige susp) did, and the grip levels are superb. Just been for a blast for 40 mins on dry and damp roads and cannt really imagine anything better.

Would like to hear more from you on the CAI - might even ask to pop up to Worcester to say hello and to have a listen!

Cheers

Link to post
Share on other sites

I guess I should be clear, the confidence the car gives is indeed awesome, especially handling wise.

I was more referring to top speed situations. I have still not done many miles so I need to get used to it yet, roll on the dry summer days :)

Whitney with regards to the CAI, totally up for a meet if you want to check it out. I think its sounds awesome and improved throttle response.

.:: Lotus Evora 400 - Red ::.. | ..:: Tesla Model S - Midnight Silver | Renault Twizy - Brilliant Black ::..

Link to post
Share on other sites
  • 4 weeks later...

For those of you that have fitted the CAI, can you categorically state that it isn't intrusive at cruising speed? I mainly use the car for European trips, so there are a lot of autoroute/autobahn runs at 2k rpm for hours. I really appreciate the noise current noise levels and don't want anything intrusive. You will be held accountable for your comments :), as I've got a trip to the Alps, Spa and Ring coming up this summer.

Link to post
Share on other sites

JAWS, Justin,

As one of the CAI enthusiasts I must respond, but it's really hard to give a helpful answer.

JAWS, if you cruise at 2K rpm I guess you have the long box. 37 x 2= 74mph, so that's your cruising speed. At 2K rpm, the CAI doesn't do much, and from the Radium graphs may even be a slight negative. Subjectively that doesn't seem the case to me, especially with Sport on, but I wouldn't want to claim anything factual.

But anyway, it's the noise level that concerns you, and what can more subjective? The sound builds according to both rpm and throttle opening. Certainly at light throttle and 2K rpm there is no significant extra noise on my car, but with the long gearing a little more throttle will be needed than with the CR box (mine). (That's a complex matter, involving engine torque/efficiency at different revs etc, but generally, lower gearing will mean less engine torque needed for a given driving torque at the wheels.)

With my CR box, 74 mph means 2740 rpm. (The CAI is operating there, with the maximum standard engine torque up to 205 ft lbs from 191 at 2000 rpm, and with the CAI up to 211 - irrelevant to steady speed driving of course, but noticeable for acceleration, or up hill.) Also I have the Sports silencer, so for both reasons I can't even take a properly meaningful test drive or make recordings. Sorry - I would of course.

The CAI costs about $430/1.6 + about £45 carriage + about £70 duties = say about £400. (Bibs has mentioned a discount - the first batch was cheaper from Radium but they have put the price up now. MIne was not charged duty - that may be random.) So it's not a huge amount in the way of these things. Also it can be unbolted and the standard kit put back, quite "easily" (in the way of these things - if your tool kit consists of a screwdriver and one spanner, best ask for help.)

So in the worst case, it's a £100 or so down the drain (surely plenty in the UK would readily buy one SH for say £250) and a few hours fun under the boot lid. (Just make sure under the working area is packed with old blankets etc to catch anything dropped.) And you get the basis for lots of posts on here with your war stories! Not to mention that even if you take it off, while it is on you will experience a whole new Lotus! A sports car! (Ok, all my experience with the CR box and the Sports silencer.)

Really sorry, I don't think that responsibly I can help more. I hope someone with a long box, standard silencer car can help more.

Mel

Link to post
Share on other sites

Cheers for the response. I've actually added the sports exhaust too and have found that it didn't have a detrimental effect on the noise level at 2k rpm so was hoping the CAI would be the same. I assume cruising at 60 (~ 2k rpm in CR Box) you don't get any noticable drone then?

Selling it on is a good option that was mention by a couple of friends when I asked their opinion.

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



Upgrade today to remove Google ads and support TLF.


×
×
  • Create New...