bit of help guys NOT HAPPY ATALL

[alex123]

right were do i start, as a few of you may already go i have just spent a small fourtune on my rover 620ti,
when i got the car off my dad the spec was _ forged pistons/ t28 hybrid turbo / full induction/ standard and powerflow exhaust / gizmo boost controller / memms ecu , with boost cut off, boost was set at 16 psi!!!! WITH ALL THIS THE CAR MADE 231BHP AND RAN A 15.5 1/4 MILE AT SANTA POD

since then the car has had-
dta s40 ecu with full loom
been mapped and had boost turned upto 18-20psi ( 269bhp / 294lbft )
660 simmens injectors
walbro fuel pump
custom down pipe off amw motorsport
better induction

just got back from fast show and was not happy atall
so why after all this money and engine work i have done, the car wouldnt get any lower than 15.4 at santa pod , i tryed easing it off the line and flooring it of line, it was crap on both , its asiff i had no boost for ages in 1st and 2nd gear ,, then half way up the track i get full boost , makes no sense to me

any advise for me , could it be to do with the map or the gizmo ect,, was only done last week and everythink was ment to be perfect! thanks guys

[Punx0r]

What turbo is it? What RPM are you getting full boost?

[peteT16]

Is the waste gate staying closed ?.

[alex123]

What turbo is it? What RPM are you getting full boost?

its a garret t28 hybrid mate , hope this helps to show you how it picks up

[Luke W 1993]

I seen your car mate I was parked up not to far away from you

Tad gutted about your car mate "/ I was hoping you'd demolish some cars "/

[rovermadman4825]

Did you sort out your actuator problem? As that was losing you power during the first mapping stages.

[Cableguy]

How many times have you been to pod ? What's your 60ft time ?

[alex123]

actuator problems all got sorted mate and and back to guy to ajust boost ect,,, its fine on the road , but on the track it just didnt have the boost till around 60 mph then it kicked in,,

[alex123]

How many times have you been to pod ? What's your 60ft time ?

quite alot mate , and 60 ft times were - worst was 3.1033 and best was 2.4172

[rovermadman4825]

On your boost controller can you adjust the boost per gear? as i know you could on the apexi to save your gear box. And as dan asked what 0 to 60ft were you getting and what was your end terminal speed?

[alex123]

On your boost controller can you adjust the boost per gear? as i know you could on the apexi to save your gear box. And as dan asked what 0 to 60ft were you getting and what was your end terminal speed?

its running gizmo boost controller, and theres only 2 settings on it, 1 is top boost and 2 3 4 5 6 is 15psi for normal driving.. the 60ft times were 3.1seconds and the best was 2.4 seconds

[rovermadman4825]

So what terminal speed were you getting as id be expecting 100+ if pulling correctly.....

[alex123]

So what terminal speed were you getting as id be expecting 100+ if pulling correctly.....

between 90mph and 96mph

[T16COUPE]

quickest ti iv ever heard run at pod was a an racing prepped one im sure it was 370bhp it done 13.81

[maestrovdpt16]

Infinite boost would surely help?

Waste gate staying closed ?.

[Drew]

what was everyone else doing on the day?

Drew

[alex123]

what was everyone else doing on the day?

Drew

better than me lol didnt see another rover go up the track either

[peteT16]

Infinite boost would surely help?

Waste gate staying closed ?.

[Cableguy]

Infinite boost would surely help?

Waste gate staying closed ?.

Waste gate closed = as much boost as the turbo can generate.

[peteT16]

Yes, I know, I was asking if the w/g was staying closed with reference to the spring not being strong enough causing the boost to build more slowly.

Wish I'd never bothered commenting tbh

[alex123]

Wastegate spring is a 14-18psi spring ,

[peteT16]

w/g valve might be starting to unseat at 14 psi.

[alex123]

what does that mean pete? sorry im not that clued up on all this tbh , cheers

[peteT16]

If you have a 14 - 18 psi spring fitted it means that the waste gate will stay closed until you get to 14psi, it may then open very slightly, so some of the exhaust gases will miss the turbine and leak away into the down pipe, this will slow down the rate that boost increases and may prevent you getting to 18psi.

[alex123]

ah right i get you, what do you suggest then , that is the correct spring for the psi im running as the one before was to week to hold the boost, it hits 20 psi on the boost gauge no problem, am feels fast on the road, but was logger at pod

[T16COUPE]

what tyres was you using

[Red_Coupe]

Some slicks would defo help! Maybe you're problem is putting all those horsepowers on the ground

[rovermadman4825]

What clutch are you using? Could it be struggling with the torque and abuse off the line? My motor had that problem, it seemed to try and grip and couldnt grip many times a second making it sluggish low down.

[peteT16]

Is it stripped, how much does a ti weigh ?.

[joshreynolds]

Is it stripped, how much does a ti weigh ?.

About the same as a third world country?

[David-Ti]

standard, about 1360kg minus driver..

[joshreynolds]

Quick google says 1450kg but according to the above that wrong or could be full of fluids and the 1360kg could be the dry weight.

[David-Ti]

its 1365kg with all fluids and standard equipment, apparently.. My memory isn't that shot yet only 5kg out.

[joshreynolds]

its 1365kg with all fluids and standard equipment, apparently.. My memory isn't that shot yet only 5kg out.

1450 must be with every box ticked and some seriously heavy polished wood then lol, still a big weight though for fwd drag racing, what suspension are you running op?

[David-Ti]

Does anyone still have the video of the rover 620ti running 14sec 1/4mile? Or can share info about the car?? If I remember correctly the car was running around 270bhp... Owner Mark Lee??..and it wasn't stripped, dont know what tyres he had on or suspension though..